In Minnesota, Romney is up 13 points among independents, ahead of Obama 49 percent to 36 percent.

◼ AFF poll: Minnesota a toss-up - Politico

Barack Obama and Mitt Romney are separated by just 1 point in Minnesota, effectively making the race there a toss-up, according to polling taken for the conservative American Future Fund.

Romney takes 46 percent of the vote to Obama's 45 percent in the poll, which was conducted by the GOP firm NMB Research and shared with POLITICO. The Republican presidential nominee is up 13 points among independents, ahead of Obama 49 percent to 36 percent.

They survey breaks with recent public data, which has shown Obama maintaining a single-digit edge over Romney, but gives Republicans reason to hope for an upset. Democrats aren't taking the state for granted at this point, with Obama countering pro-Romney ads (including AFF advertising) and deploying Bill Clinton to campaign there.