Swing state polling indicates that the race is tightest in New Hampshire and Nevada, and the heavyweight states of Florida and North Carolina.

摇摆州民调显示，这场角力在新罕布什尔州和内华达州，以及佛罗里达州和北卡罗来纳州这两个重量级州最为激烈。

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An analysis of CNN polling indicates that support for the president and congressional Democrats has slipped among self-described liberals.

CNN: Health care, Afghan war splits Democrats

While too early to be considered definitive, the polling indicates that a conservative shift by Romney in the primary campaign is costing him support among independent women voters.

CNN: Obama adds politics to women's forum

Polling indicates that Americans who oppose amnesty are more likely to consider the issue extremely important and to vote the issue -- right now, particularly in the Republican primaries.

CNN: Schneider: The political calculations of immigration