11/30/2008 05:12 am ET Updated May 25, 2011

Poll: Obama Up In Nevada, North Carolina, Ohio

With less than a week of campaigning left, Democrat Barack Obama is holding stable or growing leads over Republican John McCain in Nevada, North Carolina and Ohio, according to a new set of TIME/CNN battleground-state polls conducted by Opinion Research Corp.

Obama leads McCain among likely voters by 51% to 47% in Ohio, a 4-point margin that has not budged since last week's TIME's survey. But he now leads McCain by 52% to 45% in Nevada and by 52% to 46% in North Carolina, margins which are both slightly larger than those reported by TIME in its surveys a week earlier.

The new statewide surveys also show Obama leading McCain in Pennsylvania, the key blue state in which McCain is making a last-ditch, major push to score an upset, by a comfortable 12-point margin of 55% to 43%. But Obama still trails his Republican rival in McCain's home state of Arizona by a 7-point margin of 46% to 53%.

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