(Newsroom America) -- Presumptive GOP presidential nominee Mitt Romney has taken a 20-point lead among white voters, according to a new Rasmussen survey which has the Republican candidate ahead overall as well.
The survey shows Romney leading President Barack Obama by 47-44 percent, which is within the survey's plus- or minus 3 percent margin of error.
Most minorities continue to back the president, however. Ninety-one percent of blacks prefer Obama, as do 57 percent of Hispanics, the survey said.
In other results:
-- One-third of all Americans favor a ban on political advertising. Scott Rasmussen, president of Rasmussen Reports, says the data “suggests many Americans view political campaigns and political advertising as a form of civic pollution."
-- Obama's numbers have remained between 43 percent and 45 percent for 10 straight days, during which time Romney's has remained between 46 percent and 49 percent.
-- Most voters have yet to feel the impact of the president's signature healthcare law, but overall, 15 percent of respondents said they were helped by the law and 25 percent said they had been hurt by it.
-- 55 percent favor repeal of "Obamacare," formally known as the Affordable Care Act.
-- Rasmussen's Electoral College results put the president with 201 votes and Romney with 170; 270 are needed to win the presidency.
For Obama to win a second term, Rasmussen said, "he will need to improve his own job approval rating between now and Election Day. For that to happen, perceptions of the economy will have to reverse their current downward trend."
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