Quinnipiac Battleground Polls: Obama w/Small Leads

New polls by Quinnipiac/WaPo/WSJ find Obama with small leads in the battleground states of Colorado, Michigan, Minnesota, and Wisconsin. All surveys were conducted September 14-21 with margins of error of +/-2.6% - 2.7%:

Colorado
Obama 49 (+3 vs. last poll August 24)
McCain 45 (-2)

Obama leads by 3.3% in the RCP Average for Colorado.

Michigan
Obama 48 (+2 vs. last poll July 24)
McCain 44 (+2)

Obama leads by 5.0% in the RCP Average for Michigan.

Minnesota
Obama 47 (+1 vs. last poll July 24)
McCain 45 (+1)

Obama leads by 2.8% in the RCP Average for Minnesota.

Wisconsin
Obama 49 (-1 vs. last poll July 24)
McCain 42 (+3)

Obama leads by 3.3% in the RCP Average for Wisconsin.