New Quinnipiac/New York Times/CBS News polls in the Ohio and Florida Senate races show Democratic Sens. Sherrod Brown and Bill Nelson leading their GOP opponents by comfortable margins.
In Ohio, Brown leads GOP state Treasurer Josh Mandel by 9 points: 51 percent support to Mandel's 42 percent. Mandel leads among independent voters, 46 percent to 44 percent. Their previous poll, conducted the week prior, also had the race at 51 percent to 42 percent.
President Obama leads Mitt Romney, 50 percent to 45 percent, in the state. The poll was conducted Oct. 23-28 and surveyed 1,110 likely voters. It has a margin of error of plus-or-minus 2.9 percentage points.
In Floriday, Nelson leads GOP Rep. Connie Mack, 52 percent to 39 percent. The Democrat holds a 16-point edge among independent voters: 52 percent to 36 percent.
President Obama and Mitt Romney are neck-and-neck in the same poll, with the president ahead, 48 percent to 47 percent. Mack has consistently underperformed Romney in public polling. The poll of 1,073 likely Florida voters was conducted Oct. 23-28. The margin of error for the survey is plus-or-minus 3 percentage points.