Quinnipiac/WSJ/washpost.com polled voters from June 17-24 in four swing states -- Colorado, Michigan, Minnesota and Wisconsin -- and found Obama leading McCain in all four. Chris Cillizza breaks down the poll results at washpost.com.

Colorado (1,351 LV, MoE +/- 2.7%)
Obama 49
McCain 44

Obama leads by 5.3 points in the RCP Average for Colorado

Michigan (1,411 LV, MoE +/- 2.6%)
Obama 48
McCain 42

Obama leads by 2.0 points in the RCP Average for Michigan

Minnesota (1,572 LV, MoE +/- 2.5%)
Obama 54
McCain 37

Obama leads by 11.0 points in the RCP Average for Minnesota

Wisconsin (1,537 LV, MoE +/- 2.5%)
Obama 52
McCain 39

Obama leads by 9.3 points in the RCP Average for Wisconsin