Opinion polling in the Brazilian presidential election, 2010

Dilma Rousseff PT	José Serra PSDB	Marina Silva PV

Opinion polling in the Brazilian presidential election, 2010 began as soon as 2008. The main nationwide polling institutes are Datafolha, IBOPE, Vox Populi, and Sensus. Since January 1, 2010, as the electoral law requires, all polls must be registered under the Supreme Electoral Court.^[1]

Election information

Main article: Brazilian presidential election, 2010

The first round of the 2010 Brazilian presidential election was held on October 3, as part of the country's general election, with a second round between the two leading candidates on October 31. (Under Brazilian law, if none of the candidates receives more than a half of the valid votes, a run-off is held four weeks after the first round^[2]. The leading candidate, Dilma Rousseff, received 46.9% of the first-round vote, thereby making a second round necessary.)

In this election, Brazilian citizens eligible to vote chose the successor to current President Luiz Inácio Lula da Silva, of the democratic socialist/social democratic Workers' Party. According to the Constitution, the President is elected directly to a four-year term, with a limit of two terms. Lula was hence ineligible for a third term, since he was elected in 2002 and re-elected in 2006.^[3] The 2010 election marked the first time since the end of the military dictatorship that Lula was not a candidate for the presidency.^[4]

Candidates overview

Since the earliest polls for President, former São Paulo Governor José Serra – candidate for the center-right^[5] opposition group led by the centrist/Third Way^[6][7] Social Democratic Party – was ahead of Dilma Rousseff, pre-candidate for the ruling center-left bloc led by the Workers' Party. Rousseff, however, increased her popularity greatly, rising from 3% in March 2008 to 30% in March 2010. On the May 8, 2010 poll by Vox Populi, she finally surpassed Serra, achieving 37% of the voting intention.

Another potential candidate for the ruling center-left group was Ciro Gomes from the Brazilian Socialist Party,^[6] who lost his comfortable second place in polls to Rousseff in May 2009. Since then, he maintained an average of 12% of voting intention. On April 27, 2010, Gomes' party declined to launch his candidacy, instead supporting Rousseff.^[8] In the left-wing opposition group, Socialism and Freedom Party's Heloísa Helena was the most likely candidate, but her name was withdrawn from polling after she expressed desire to run for a seat in the Senate for Alagoas.^[9] Plínio de Arruda Sampaio is her party's candidate for President.^[9] Almost simultaneously, Marina Silva left the Workers' Party and joined the Green Party to run for President.^[10] Prior to her candidature, she was well-known internationally as a defender of the Amazon Rainforest, but was less known in her native Brazil,^[6].

Polls

It should be noted that the results displayed in this article excludes results for spontaneous polls (in which cards with the names of likely candidates are not presented to researched voters), due to the significant amount of voters that would vote on incumbent President Luiz Inácio Lula da Silva. By law, leaders of all stances of the Executive branch can only be re-elected once.

On September, Vox Populi institute began an unprecedented tracking poll for President, which was intended to last for 36 days until October 2.

Nationwide

Graphic representation of polls up to September 29, 2010.

Date conducted	Institute	José Serra	Dilma Rousseff	Ciro Gomes	Heloísa Helena	Marina Silva	Others / None / Undecided	Lead
October 31, 2010	Election Results (2nd round)	43.9%	56.1%	—	—	—	—	12.2% over Serra
October 30, 2010	Vox Populi[11]	39%	51%	—	—	—	10%	12% over Serra
October 29–30, 2010	Datafolha[12]	41%	51%	—	—	—	8%	10% over Serra
October 28–29, 2010	Sensus[13]	37.6%	50.3%	—	—	—	12%	12.7% over Serra
October 28, 2010	Datafolha[14]	40%	50%	—	—	—	10%	10% over Serra
October 27–30, 2010	Ibope[15]	40%	52%	—	—	—	8%	12% over Serra
October 27, 2010	Datafolha[16]	38%	49%	—	—	—	13%	11% over Serra
October 26–28, 2010	Ibope[17]	39%	52%	—	—	—	9%	13% over Serra
October 23–25, 2010	Sensus[18]	36.7%	51.9%	—	—	—	11.4%	15.2% over Serra
October 23–24, 2010	Vox Populi[19]	38%	49%	—	—	—	13%	11% over Serra
October 21, 2010	Datafolha[20]	40%	50%	—	—	—	10%	10% over Serra
October 18–19, 2010	Sensus[21]	41,8%	46,8%	—	—	—	11.4%	5% over Serra
October 17–20, 2010	Ibope[22]	40%	51%	—	—	—	9%	11% over Serra
October 15–17, 2010	Vox Populi[23]	39%	51%	—	—	—	10%	12% over Serra
October 14–15, 2010	Datafolha[24]	41%	47%	—	—	—	12%	6% over Serra
October 11–13, 2010	Sensus[25]	42.7%	46.8%	—	—	—	10.5%	4.1% over Serra
October 11–13, 2010	Ibope[26]	43%	49%	—	—	—	8%	6% over Serra
October 10–11, 2010	Vox Populi[27]	40%	48%	—	—	—	12%	8% over Serra
October 8, 2010	Datafolha[28]	41%	48%	—	—	—	11%	7% over Serra
October 3, 2010	Election Results (1st round)	32.6%	46.9%	—	—	19.3%	1.2%	14.3% over Serra
October 2, 2010	Vox Populi[29]	26%	47%	—	—	14%	13%	21% over Serra
October 1–2, 2010	Ibope[30]	29%	47%	—	—	16%	8%	18% over Serra
October 1–2, 2010	Datafolha[31]	29%	47%	—	—	16%	8%	18% over Serra
October 1, 2010	Vox Populi[29]	27%	48%	—	—	12%	13%	21% over Serra
September 30, 2010	Vox Populi[29]	26%	49%	—	—	12%	13%	23% over Serra
September 29, 2010	Vox Populi[29]	26%	49%	—	—	12%	13%	23% over Serra
September 28–29, 2010	Datafolha[32]	28%	47%	—	—	14%	11%	19% over Serra
September 28, 2010	Vox Populi[29]	25%	49%	—	—	12%	14%	24% over Serra
September 27, 2010	Datafolha[33]	28%	46%	—	—	14%	12%	18% over Serra
September 27, 2010	Vox Populi[29]	24%	49%	—	—	13%	14%	25% over Serra
September 26–28, 2010	Sensus[34]	25.6%	47.5%	—	—	11.6%	15.3%	21.9% over Serra
September 26, 2010	Vox Populi[29]	24%	49%	—	—	12%	15%	25% over Serra
September 25–26, 2010	Ibope[35]	27%	50%	—	—	13%	10%	23% over Serra
September 25, 2010	Vox Populi[29]	23%	50%	—	—	11%	16%	27% over Serra
September 24, 2010	Vox Populi[29]	24%	50%	—	—	10%	16%	26% over Serra
September 23, 2010	Vox Populi[29]	24%	51%	—	—	10%	15%	27% over Serra
September 22, 2010	Vox Populi[29]	24%	51%	—	—	10%	15%	27% over Serra
September 21–23, 2010	Ibope[36]	28%	50%	—	—	12%	10%	22% over Serra
September 21–22, 2010	Datafolha[37]	28%	49%	—	—	13%	10%	21% over Serra
September 21, 2010	Vox Populi[29]	25%	52%	—	—	9%	14%	27% over Serra
September 20, 2010	Vox Populi[29]	23%	53%	—	—	9%	15%	30% over Serra
September 19, 2010	Vox Populi[29]	24%	53%	—	—	9%	14%	29% over Serra
September 18, 2010	Vox Populi[29]	24%	51%	—	—	9%	16%	27% over Serra
September 17, 2010	Vox Populi[29]	23%	51%	—	—	9%	17%	28% over Serra
September 16, 2010	Vox Populi[29]	23%	51%	—	—	9%	17%	28% over Serra
September 15, 2010	Vox Populi[29]	22%	52%	—	—	9%	17%	30% over Serra
September 14–17, 2010	Ibope[38]	25%	51%	—	—	11%	13%	26% over Serra
September 14, 2010	Vox Populi[29]	22%	53%	—	—	8%	17%	31% over Serra
September 13–15, 2010	Datafolha[39]	27%	51%	—	—	11%	11%	24% over Serra
September 13, 2010	Vox Populi[29]	22%	54%	—	—	8%	16%	32% over Serra
September 12, 2010	Vox Populi[29]	23%	53%	—	—	9%	15%	30% over Serra
September 11, 2010	Vox Populi[29]	23%	52%	—	—	9%	16%	29% over Serra
September 10–12, 2010	Sensus[40]	26.4%	50.5%	—	—	8.9%	14.2%	24.1% over Serra
September 10, 2010	Vox Populi[29]	22%	53%	—	—	9%	16%	31% over Serra
September 9, 2010	Vox Populi[29]	21%	53%	—	—	9%	17%	32% over Serra
September 8–9, 2010	Datafolha[41]	27%	50%	—	—	11%	12%	23% over Serra
September 8, 2010	Vox Populi[29]	21%	54%	—	—	9%	15%	33% over Serra
September 7, 2010	Vox Populi[29]	21%	56%	—	—	8%	15%	35% over Serra
September 6, 2010	Vox Populi[29][42]	22%	55%	—	—	8%	15%	33% over Serra
September 5, 2010	Vox Populi[29][42]	24%	53%	—	—	8%	15%	29% over Serra
September 4, 2010	Vox Populi[43]	24%	53%	—	—	8%	15%	29% over Serra
September 3, 2010	Vox Populi[44]	24%	52%	—	—	8%	16%	28% over Serra
September 2–3, 2010	Datafolha[45]	28%	50%	—	—	10%	12%	22% over Serra
September 2, 2010	Vox Populi[46]	25%	51%	—	—	9%	15%	26% over Serra
September 1, 2010	Vox Populi[29][42]	25%	51%	—	—	9%	15%	26% over Serra
August 31-September 2, 2010	Ibope[47]	27%	51%	—	—	8%	14%	24% over Serra
August 24–26, 2010	Ibope[48]	27%	51%	—	—	7%	15%	24% over Serra
August 23–24, 2010	Datafolha[49]	29%	49%	—	—	9%	13%	20% over Serra
August 20–22, 2010	Sensus[50]	28.1%	46%	—	—	8.1%	17.8%	17.9% over Serra
August 20, 2010	Datafolha[51]	30%	47%	—	—	9%	14%	17% over Serra
August 12–15, 2010	Ibope[52]	32%	43%	—	—	8%	17%	11% over Serra
August 9–12, 2010	Datafolha[53]	33%	41%	—	—	10%	16%	8% over Serra
August 7–10, 2010	Vox Populi[54]	29%	45%	—	—	8%	18%	16% over Serra
August 2–5, 2010	Ibope[55]	34%	39%	—	—	8%	19%	5% over Serra
July 31-August 2, 2010	Sensus[56]	31.6%	41.6%	—	—	8.5%	18.3%	10% over Serra
July 26–29, 2010	Ibope[57]	34%	39%	—	—	7%	19%	5% over Serra
July 20–23, 2010	Datafolha[57]	37%	36%	—	—	10%	17%	1% over Dilma
July 17–20, 2010	Vox Populi[57]	33%	41%	—	—	8%	17%	8% over Serra
June 30-July 1, 2010	Datafolha[57]	39%	38%	—	—	10%	12%	1% over Dilma
June 27–30, 2010	Ibope[57]	39%	39%	—	—	10%	13%	0%
June 24–26, 2010	Vox Populi[58]	35%	40%	—	—	8%	17%	5% over Serra
June 19–21, 2010	Ibope[59]	35%	40%	—	—	9%	16%	5% over Serra
May 31-June 3, 2010	Ibope[60]	37%	37%	—	—	9%	17%	0%
May 20–21, 2010	Datafolha[61]	37%	37%	—	—	12%	14%	0%
May 10–14, 2010	Sensus[62]	33.2%	35.7%	—	—	8%	17.3%	2.5% over Serra
May 8–13, 2010	Vox Populi[63]	35%	38%	—	—	7%	22%	3% over Serra
April 15–16, 2010	Datafolha[64]	38%	28%	9%	—	10%	15%	10% over Dilma
April 13–16, 2010	Ibope[65]	36%	29%	8%	—	8%	19%	7% over Dilma
April 5–9, 2010	Sensus[66]	32.7%	32.4%	10.1%	—	8.1%	16.7%	0.3% over Dilma
March 30–31, 2010	Vox Populi[67]	34%	31%	10%	—	5%	20%	3% over Dilma
March 25–26, 2010	Datafolha[68]	36%	27%	11%	—	8%	18%	9% over Dilma
March 6–10, 2010	Ibope[69]	35%	30%	11%	—	6%	18%	5% over Dilma
February 24–25, 2010	Datafolha[70]	32%	28%	12%	—	8%	19%	4% over Dilma
February 6–9, 2010	Ibope[71]	36%	25%	11%	—	8%	20%	11% over Dilma
January 25–29, 2010	Sensus[72]	33.2%	27.8%	11.9%	—	6.8%	20.3%	5.4% over Dilma
January 14–17, 2010	Vox Populi[73]	34%	27%	11%	—	9%	19%	7% over Dilma
December 14–18, 2009	Datafolha[74]	37%	23%	13%	—	8%	19%	14% over Dilma
November 26–30, 2009	Ibope[75]	38%	17%	13%	—	6%	25%	21% over Dilma
November 23, 2009	Sensus[76]	31.8%	21.7%	17.5%	—	5.9%	23.1%	10.1% over Dilma
November 11, 2009	Vox Populi[77]	36%	19%	13%	6%	3%	23%	17% over Dilma
September 8, 2009	Sensus[78]	39.5%	19%	—	9.7%	4.8%	27%	20.5% over Dilma
August 18, 2009	Vox Populi[79]	30%	21%	17%	12%	—	20%	9% over Dilma
August 16, 2009	Datafolha[80]	38%	17%	14%	12%	3%	18%	21% over Dilma
June 9, 2009	Ibope[81]	38%	18%	12%	7%	—	25%	20% over Dilma
May 28, 2009	Datafolha[82]	38%	16%	15%	10%	—	21%	22% over Dilma
March 19, 2009	Datafolha[82]	41%	11%	16%	11%	—	21%	25% over Ciro
November 28, 2008	Datafolha[82]	41%	8%	15%	14%	—	21%	26% over Ciro
March 27, 2008	Datafolha[82]	38%	3%	20%	14%	—	25%	18% over Ciro

Regional

Central-West/North*
Date conducted	Institute[57]	José Serra	Dilma Rousseff	Ciro Gomes	Marina Silva	Others / None / Undecided	Lead
September 21–22, 2010	Datafolha	30%	46%	–	16%	8%	16% over Serra
September 14–16, 2010	Ibope	30%	46%	–	13%	11%	16% over Serra
September 13–15, 2010	Datafolha	28%	49%	–	13%	10%	21% over Serra
September 8–9, 2010	Datafolha	29%	47%	–	14%	10%	18% over Serra
September 2–3, 2010	Datafolha	29%	51%	–	10%	10%	22% over Serra
August 31-September 2, 2010	Ibope	25%	55%	–	8%	12%	30% over Serra
August 24–26, 2010	Ibope	24%	56%	–	9%	11%	32% over Serra
August 23–24, 2010	Datafolha	29%	50%	–	8%	13%	21% over Serra
August 20, 2010	Datafolha	27%	50%	–	12%	11%	23% over Serra
August 12–15, 2010	Ibope	41%	33%	–	9%	17%	8% over Serra
August 9–12, 2010	Datafolha	33%	43%	–	11%	13%	10% over Serra
July 26–29, 2010	Ibope	33%	40%	–	8%	19%	7% over Serra
July 20–23, 2010	Datafolha	33%	40%	–	10%	17%	7% over Serra
June 30-July 1, 2010	Datafolha	38%	42%	–	8%	12%	4% over Serra
June 27–30, 2010	Ibope	41%	33%	–	9%	17%	8% over Dilma
May 31-June 3, 2010	Ibope	31%	43%	–	11%	15%	12% over Serra
May 20–21, 2010	Datafolha	40%	34%	–	14%	12%	6% over Dilma
April 15–16, 2010	Datafolha	39%	30%	6%	12%	13%	9% over Dilma
March 25–26, 2010	Datafolha	34%	29%	9%	10%	18%	5% over Dilma
February 24–25, 2010	Datafolha	32%	29%	11%	13%	16%	3% over Dilma
December 14–18, 2010	Datafolha	38%	24%	13%	9%	16%	14% over Dilma
(*) The Central-West and North regions are counted as one macroregion due to their low population density.

Northeast
Date conducted	Institute[57]	José Serra	Dilma Rousseff	Ciro Gomes	Marina Silva	Others / None / Undecided	Lead
September 21–22, 2010	Datafolha	20%	63%	–	9%	8%	43% over Serra
September 14–16, 2010	Ibope	16%	66%	–	7%	11%	50% over Serra
September 13–15, 2010	Datafolha	18%	65%	–	7%	10%	47% over Serra
September 8–9, 2010	Datafolha	18%	63%	–	8%	11%	45% over Serra
September 2–3, 2010	Datafolha	20%	61%	–	6%	13%	41% over Serra
August 31-September 2, 2010	Ibope	18%	65%	–	6%	11%	47% over Serra
August 24–26, 2010	Ibope	20%	66%	–	5%	9%	46% over Serra
August 23–24, 2010	Datafolha	21%	60%	–	6%	13%	39% over Serra
August 20–22, 2010	Sensus[50]	19.8%	62.1%	–	6.4%	11.1%	42.3% over Serra
August 20, 2010	Datafolha	22%	60%	–	5%	12%	38% over Serra
August 12–15, 2010	Ibope	24%	53%	–	6%	17%	29% over Serra
August 9–12, 2010	Datafolha	25%	49%	–	8%	18%	25% over Serra
July 26–29, 2010	Ibope	25%	49%	–	5%	21%	25% over Serra
July 24–26, 2010	Vox Populi	27%	52%	–	5%	17%	25% over Serra
July 20–23, 2010	Datafolha	29%	41%	–	9%	20%	12% over Serra
June 30-July 1, 2010	Datafolha	30%	46%	–	7%	17%	16% over Serra
June 27–30, 2010	Ibope	30%	50%	–	7%	14%	20% over Serra
May 31-June 3, 2010	Ibope	27%	47%	–	9%	17%	20% over Serra
May 20–21, 2010	Datafolha	33%	44%	–	18%	15%	11% over Serra
May 8–13, 2010	Vox Populi	45%	30%	–	4%	21%	15% over Serra
April 15–16, 2010	Datafolha	27%	33%	14%	10%	16%	6% over Serra
March 30–31, 2010	Vox Populi	26%	40%	13%	5%	16%	14% over Serra
March 25–26, 2010	Datafolha	25%	35%	14%	6%	20%	10% over Serra
February 24–25, 2010	Datafolha	22%	36%	15%	6%	22%	14% over Serra
December 14–18, 2009	Datafolha	28%	31%	14%	7%	20%	3% over Serra

South
Date conducted	Institute[57]	José Serra	Dilma Rousseff	Ciro Gomes	Marina Silva	Others / None / Undecided	Lead
September 21–22, 2010	Datafolha	35%	43%	–	10%	12%	8% over Serra
September 14–16, 2010	Ibope	35%	42%	–	10%	13%	7% over Serra
September 13–15, 2010	Datafolha	34%	42%	–	9%	15%	8% over Serra
September 8–9, 2010	Datafolha	35%	43%	–	9%	13%	8% over Serra
September 2–3, 2010	Datafolha	31%	44%	–	9%	16%	13% over Serra
August 31-September 2, 2010	Ibope	35%	44%	–	5%	16%	9% over Serra
August 23–24, 2010	Datafolha	36%	43%	–	7%	14%	7% over Serra
August 20–22, 2010	Sensus[50]	47.8%	35.7%	–	6.9%	9.3%	12.1% over Dilma
August 20, 2010	Datafolha	40%	38%	–	10%	12%	2% over Dilma
August 12–15, 2010	Ibope	44%	35%	–	8%	13%	9% over Dilma
August 9–12, 2010	Datafolha	41%	34%	–	8%	17%	7% over Dilma
July 26–29, 2010	Ibope	46%	31%	–	5%	17%	15% over Dilma
June 24–26, 2010	Vox Populi	44%	33%	–	8%	15%	11% over Dilma
July 20–23, 2010	Datafolha	45%	32%	–	9%	13%	13% over Dilma
June 30-July 1, 2010	Datafolha	50%	32%	–	8%	11%	18% over Dilma
June 27–30, 2010	Ibope	45%	37%	–	9%	10%	8% over Dilma
May 31-June 3, 2010	Ibope	46%	26%	–	6%	21%	20% over Dilma
May 20–21, 2010	Datafolha	38%	35%	–	12%	14%	3% over Dilma
May 8–13, 2010	Vox Populi	45%	30%	–	8%	16%	15% over Dilma
April 15–16, 2010	Datafolha	45%	25%	6%	8%	16%	20% over Dilma
March 30–31, 2010	Vox Populi	33%	33%	7%	3%	25%	0%
March 25–26, 2010	Datafolha	48%	20%	7%	6%	18%	28% over Dilma
February 24–25, 2010	Datafolha	38%	24%	9%	6%	23%	14% over Dilma
December 14–18, 2010	Datafolha	39%	19%	12%	7%	23%	20% over Dilma

Southeast
Date conducted	Institute[57]	José Serra	Dilma Rousseff	Ciro Gomes	Marina Silva	Others / None / Undecided	Lead
September 21–22, 2010	Datafolha	30%	44%	–	16%	10%	14% over Serra
September 14–16, 2010	Ibope	24%	48%	–	14%	15%	24% over Serra
September 13–15, 2010	Datafolha	29%	46%	–	14%	11%	17% over Serra
September 8–9, 2010	Datafolha	29%	46%	–	13%	12%	17% over Serra
September 2–3, 2010	Datafolha	33%	44%	–	12%	11%	11% over Serra
August 31-September 2, 2010	Ibope	31%	44%	–	10%	15%	13% over Serra
August 24–26, 2010	Ibope	30%	44%	–	8%	18%	14% over Serra
August 23–24, 2010	Datafolha	32%	44%	–	11%	13%	12% over Serra
August 20–22, 2010	Sensus[50]	27.6%	39.2%	–	9.7%	21.8%	11.6% over Serra
August 20, 2010	Datafolha	33%	42%	–	10%	15%	9% over Serra
August 12–15, 2010	Ibope	32%	41%	–	10%	17%	9% over Serra
August 9–12, 2010	Datafolha	35%	37%	–	13%	15%	2% over Serra
July 26–29, 2010	Ibope	35%	37%	–	9%	19%	2% over Serra
July 24–26, 2010	Vox Populi	37%	34%	–	9%	21%	3% over Dilma
July 20–23, 2010	Datafolha	40%	33%	–	12%	15%	7% over Dilma
June 30-July 1, 2010	Datafolha	43%	33%	–	13%	11%	10% over Dilma
June 27–30, 2010	Ibope	41%	34%	–	12%	14%	7% over Dilma
May 31-June 3, 2010	Ibope	41%	33%	–	10%	16%	8% over Dilma
May 20–21, 2010	Datafolha	40%	33%	–	12%	15%	7% over Dilma
May 8–13, 2010	Vox Populi	35%	36%	–	9%	20%	1% over Serra
April 15–16, 2010	Datafolha	42%	24%	9%	10%	15%	18% over Dilma
March 30–31, 2010	Vox Populi	39%	26%	10%	5%	21%	13% over Dilma
March 25–26, 2010	Datafolha	40%	24%	10%	9%	16%	16% over Dilma
February 24–25, 2010	Datafolha	38%	24%	12%	9%	16%	14% over Dilma
December 14–18, 2009	Datafolha	41%	19%	12%	9%	18%	22% over Dilma

References

1. ^ (Portuguese) "Confira o calendário eleitoral 2010". Terra.
2. ^ Colitt, Raymond. "Key dates in Brazil's 2010 presidential race". Reuters. January 11, 2010.
3. ^ Barrionuevo, Alexei. "The Health of a Likely Presidential Candidate Comes Under Brazil's Microscope". The New York Times, May 23, 2009. Accessed June 14, 2009.
4. ^ Colitt, Raymond. "Positions of Brazil's leading candidates". Reuters. January 11, 2010.
5. ^ Freedom House (July 16, 2009). "Freedom in the World 2009 - Brazil". UNHCR. http://unhcr.org/refworld/publisher,FREEHOU,,BRA,4a6452cb23,0.html. "In early 1994, Fernando Henrique Cardoso (...) forged a three-party, centre-right coalition around his Brazilian Social Democracy Party (PSDB)." 
6. ^ ^{a b c} Colitt, Raymond. "Key names in Brazil's 2010 presidential race". Reuters. December 17, 2010.
7. ^ Segrillo, Angelo (2004). "A confusão esquerda-direita no mundo pós-Muro de Berlim [The left-right confusion in the post-Berlin Wall world]" (in Portuguese). Dados 47: 615–632. doi:10.1590/S0011-52582004000300006. ISSN 0011-5258. http://www.scielo.br/scielo.php?pid=S0011-52582004000300006&script=sci_arttext. "Most analists defined PSDB as center-left as of its foundation (...) The story changed after 1994, with the election of PSDB to the Presidency. A rhetoric of overcoming the classical ideological divisions (...) was one of the justifications for the grand parliamentary alliance center and right-wing parties (...). As a matter of fact, after the 1994 election, most analists starting defining PSDB as a centrist party along with PMDB" 
8. ^ [1]
9. ^ ^{a b} (Portuguese) Faria, Tales. "PSol aprova resolução para se afastar de Marina Silva". Último Segundo. December 8, 2009.
10. ^ (Portuguese) Agência Estado. "PV já articula apoio à candidatura de Marina Silva". August 14, 2009. Globo.com. Retrieved on 2009-08-15.
11. ^ (Portuguese) "Vox Populi: Dilma tem 57% dos votos válidos e Serra, 43%". Terra. October 30, 2010.
12. ^ (Portuguese) "Datafolha: Dilma soma 55% dos votos válidos; Serra tem 45%". Terra. October 30, 2010.
13. ^ (Portuguese) "CNT/Sensus: Dilma chega a 57,2% dos votos válidos; Serra tem 42,8%". Terra. October 30, 2010.
14. ^ (Portuguese) Agência Brasil. "Datafolha aponta menos indecisos e vantagem de Dilma". DCI. October 29, 2010.
15. ^ (Portuguese) "Ibope: Dilma chega a 56% e Serra tem 44% dos votos válidos". Terra. October 30, 2010.
16. ^ (Portuguese) "Datafolha mostra Dilma com 56% e Serra com 44% dos votos válidos". G1. October 26, 2010.
17. ^ (Portuguese) Reuters. "Dilma tem 52% contra 39% de Serra, aponta Ibope". O Globo. October 28, 2010.
18. ^ (Portuguese) BBC Brasil. "CNT/Sensus aponta Dilma com 51,9%, contra 36,7% de Serra". O Globo. October 27, 2010.
19. ^ (Portuguese) BBC Brasil. "Vox Populi mostra Dilma com 49% dos votos, contra 38% de Serra". O Globo. October 25, 2010.
20. ^ (Portuguese) "Datafolha: Dilma tem 50% dos votos contra 40% de Serra". O Globo. October 22, 2010.
21. ^ (Portuguese) Reuters. "Sensus mostra Dilma com 46,8% e Serra com 41,8%, mostra CNT". O Globo. October 20, 2010.
22. ^ (Portuguese) "Ibope: Dilma amplia vantagem sobre Serra para 11 pontos". Último Segundo. October 20, 2010.
23. ^ (Portuguese) BBC Brasil. "Pesquisa Vox Populi indica Dilma com 51%, contra 39% de Serra". O Globo. October 19, 2010.
24. ^ (Portuguese) Della Barba, Mariana. "Dilma mantém oito pontos de vantagem sobre Serra, diz Datafolha". BBC Brasil. October 16, 2010.
25. ^ (Portuguese) "CNT/Sensus: Dilma 52,3% e Serra 47,7%". O Globo Online. October 14, 2010.
26. ^ (Portuguese) "Ibope: Dilma tem 53% dos votos válidos, e Serra, 47%". Época. October 13, 2010.
27. ^ (Portuguese) "Vox Populi: Dilma tem 48%; Serra tem 40%". Última Hora. October 13, 2010.
28. ^ (Portuguese) "Pesquisa aponta Dilma sete pontos acima de Serra". Zero Hora. October 9, 2010.
29. ^ ^{a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac} (Portuguese) "Tracking Vox Populi/Band/iG: Dilma tem 53% dos votos válidos". Último Segundo. October 2, 2010.
30. ^ (Portuguese) "Ibope reforça indefinição sobre segundo turno nas eleições para presidente". Zero Hora. October 2, 2010.
31. ^ "". Terra.
32. ^ (Portuguese) "Datafolha: Dilma tem 47% e Serra, 28%". Último Segundo. September 30, 2010.
33. ^ (Portuguese) "Datafolha: com 46%, cai vantagem de Dilma para outros candidatos". Terra. September 28, 2010.
34. ^ (Portuguese) Andrade, Claudia. "CNT/Sensus: Dilma tem 54,7% dos votos válidos e Serra, 29,5%". Terra. September 29, 2010.
35. ^ (Portuguese) Agencia EFE. "Pesquisa CNI/Ibope aponta Dilma com 50%". European Pressphoto Agency. September 29, 2010.
36. ^ (Portuguese) "Ibope: Dilma mantém liderança com 50%; Serra chega a 28% e Marina a 12%". BOL. September 24, 2010.
37. ^ (Portuguese) "Datafolha: cai diferença de Dilma para os outros candidatos". Terra. September 22, 2010.
38. ^ (Portuguese) Agência Estado. "Ibope: Dilma amplia vantagem sobre Serra". Diário da Manhã. September 17, 2010.
39. ^ (Portuguese) Agência Estado. "Datafolha: Dilma avança a 51% e venceria já no 1º turno". O Estado de S. Paulo. September 16, 2010.
40. ^ BBC Brasil. "Dilma amplia vantagem em pesquisa CNT/Sensus". O Globo. September 14, 2010.
41. ^ Duarte, Alec. "Com 50%, Dilma mantém vantagem e quadro é de estabilidade, diz Datafolha". BOL. September 10, 2010.
42. ^ ^{a b c} (Portuguese) "Tracking Vox Populi/Band/iG". e-BAND.
43. ^ (Portuguese) "Tracking Vox Populi/Band/iG: Dilma 53%, Serra 24%". Último Segundo. September 4, 2010.
44. ^ (Portuguese) "Dilma sobe; Serra e Marina caem, mostra pesquisa diária Vox Populi". e-BAND. September 3, 2010.
45. ^ (Portuguese) "Dilma tem 50% e amplia para 22 pontos a vantagem sobre Serra, aponta pesquisa". R7. September 4, 2010.
46. ^ (Portuguese) "Dilma mantém 51% e Serra, 25%, segundo pesquisa diária Vox Populi". e-BAND. September 2, 2010.
47. ^ (Portuguese) "Nova pesquisa Ibope mantém Dilma com 24 pontos na frente de Serra". Correio Braziliense. September 3, 2010.
48. ^ (Portuguese) "Dilma tem 51%, e Serra, 27%, aponta Ibope". G1. August 28, 2010.
49. ^ (Portuguese) Rodrigues, Fernando. "Dilma abre 20 pontos e já ultrapassa Serra em SP e no RS, diz Datafolha". Folha de S. Paulo. August 26, 2010.
50. ^ ^{a b c d} (Portuguese) Campanerut, Camila. "Pesquisa CNT/Sensus: Dilma tem 46% das intenções de voto; Serra, 28,1%". BOL. August 24, 2010.
51. ^ (Portuguese) Folha de S. Paulo. "Dilma abre 17 pontos sobre Serra e venceria no primeiro turno". Agora. August 21, 2010.
52. ^ (Portuguese) EFE. "Dilma abre 11 pontos sobre Serra em pesquisa Ibope". Terra. August 16, 2010.
53. ^ (Portuguese) Dias, Marina, Caitano, Adriana, and Melo, Fernando. "Datafolha: Dilma tem 41% contra 33% de José Serra". Veja. August 13, 2010.
54. ^ (Portuguese) "Vox Populi aponta vantagem de 16 pontos de Dilma sobre Serra". G1. August 17, 2010.
55. ^ (Portuguese) Agência EFE. "Dilma segue na liderança em nova pesquisa Ibope". European Pressphoto Agency. August 6, 2010.
56. ^ (Portuguese) Borges, Laryssa. "CNT: Serra vence Dilma apenas no Sul e entre ricos e escolarizados". Terra. August 5, 2010.
57. ^ ^{a b c d e f g h i} Poll tracker at UOL Eleições
58. ^ (Portuguese) iG São Paulo. "Vox Populi confirma dianteira de Dilma". Último Segundo. June 29, 2010.
59. ^ (Portuguese) "CNI/Ibope: Dilma lidera pesquisa pela 1ª vez com 40%". A Tarde. June 23, 2010.
60. ^ (Portuguese) "Pesquisa Ibope mostra Dilma e Serra empatados em 37%". G1. June 5, 2010.
61. ^ (Portuguese) [2]
62. ^ (Portuguese) G1. "CNT/Sensus mostra Dilma com 35,7% e Serra com 33,2%". G1. May 17, 2010.
63. ^ (Portuguese) Sassine, Vinícius. "Pela primeira vez, Dilma passa Serra em pesquisa de intenção de votos". Correio Braziliense. May 15, 2010.
64. ^ (Portuguese) Freitas, Tatiana. "Datafolha mostra Serra com 38% e Dilma com 28%". O Estado de S. Paulo. April 17, 2010.
65. ^ (Portuguese) "Ibope divulga nova pesquisa sobre intenção de voto para a Presidência". Jornal Floripa. April 23, 2010.
66. ^ (Portuguese) Folha Online. "Pesquisa Sensus aponta empate entre Serra e Dilma". BOL. April 13, 2010.
67. ^ (Portuguese) Jorge, Eliano. "Vox Populi: Serra tem 34%, contra 31% de Dilma". Terra Magazine. April 3, 2010.
68. ^ (Portuguese) EFE "Datafolha põe Serra 9 pontos à frente de Dilma". G1. March 27, 2010.
69. ^ "Brazil’s Rousseff is Becoming a Stronger Contender". Angus Reid Global Monitor. March 31, 2010.
70. ^ (Portuguese) Blog do Noblat. "A terra treme sob os pés de Serra". O Globo. February 27, 2010.
71. ^ "Lula’s Anointed Candidate Gains in Brazil". Angus Reid Global Monitor. March 4, 2010.
72. ^ (Portuguese) Reuters Brasil. "Dilma sobe em intenção de voto; se aproxima de Serra, diz Sensus". O Globo. February 2, 2010.
73. ^ (Portuguese) "Pesquisa mostra queda de Serra em corrida eleitoral". R7. January 29, 2010.
74. ^ "Rousseff Grows, Serra Stable in Brazil". Angus Reid Global Monitor. January 10, 2009.
75. ^ "Serra Maintains Significant Lead in Brazil". Angus Reid Global Monitor. December 10, 2009.
76. ^ (Portuguese) Abreu, Diego. "Serra lidera pesquisa para 2010, mas adversários crescem, diz CNT/Sensus". Globo.com. November 23, 2009. Retrieved on 2009-11-23.
77. ^ (Portuguese) Redação. "Vox Populi: Serra lidera com 36% para 2010; Dilma sobe". Terra. November 11, 2009. Retrieved on 2009-11-14.
78. ^ (Portuguese) Agência Estado. "CNT/Sensus: Serra lidera todas simulações para 2010". Yahoo! Notícias. September 8, 2009. Retrieved on 2009-09-08.
79. ^ (Portuguese) Jornal da Band. "Serra lidera disputa pela Presidência, diz pesquisa". e-BAND. August 18, 2009. Retrieved on 2009-08-23.
80. ^ (Portuguese) Portal G1. "Serra mantém liderança na disputa pela Presidência, mostra Datafolha". Globo.com. August 15, 2009. Retrieved on 2009-08-15.
81. ^ (Portuguese) Lopes, Roberta. "Serra lidera pesquisa Ibope de intenção de voto para 2010". Agência Brasil. June 9, 2009. Retrieved on 2009-08-15.
82. ^ ^{a b c d} (Portuguese) "Intenção de voto para presidente 2010". Datafolha. August 17, 2009. Retrieved on 2009-10-20.

External links

• Results of polls in Brazil at Angus Reid Global Monitor official website
• (Portuguese) Poll tracker at the Supreme Electoral Court official website
• (Portuguese) Poll tracker at UOL Eleições
• (Portuguese) Datafolha polls for the 2010 elections
• (Portuguese) Vox Populi polls for the 2010 elections
• (Portuguese) Results of the CNT/Sensus general search