Obama's lead has shrunk among likely voters in three swing states -- Florida, Ohio and Pennsylvania -- according to Quinnipiac polls released today. The race is a dead heat in Florida and Ohio, and Obama is up 7 points in Pennsylvania. All three states show smaller margins for Obama compared with last month.

Florida (July 23-29, 1238 LV)

Obama 46 (-1 vs. last poll, June 9-16)
McCain 44 (+1)

McCain leads by 0.5 of a point in the RCP Average for Florida

Ohio (July 23-29, 1229 LV)

Obama 46 (-2 vs. last poll, June
McCain 44 (+2)

Obama leads by 0.5 of a point in the RCP Average for Ohio

Pennsylvania (July 23-29, 1317 LV)

Obama 49 (-3 vs. last poll, June 9-16)
McCain 42 (+2)

Obama leads by 7.4 points in the RCP Average for Pennsylvania