Poll: Romney cuts Obama lead to 1 point in swing-state Wis.

President Obama’s double-digit lead has vanished in the critical battleground state of Wisconsin, according to a Marquette University Law School poll released Wednesday.

Obama leads with 49 percent support over Romney at 48, according to the survey. The same poll from mid-September, before the first momentum-shifting presidential debate, showed Obama with a 53 to 42 percent lead over Romney.

Obama leads by 2 percentage points in Wisconsin, according to the Real Clear Politics average of polls.

The latest Marquette poll was conducted before Tuesday night’s town-hall debate, but shows how much Romney gained on the president on the strength of his overwhelming debate victory earlier this month in Denver.

Marquette University polling director Charles Franklin said over Twitter that the race in Wisconsin is “as close as it could possibly be.”

Obama’s lead among women in Wisconsin was 25 percentage points in the previous poll, and Romney has since cut that lead to 4.

Romney’s favorability rating also got a significant boost, from 39 positive and 53 negative in mid-September to 43 positive and 48 negative presently.

Obama’s favorability rating is still above water, at 52 positive and 44 negative, but down from his 56-41 score in the previous poll.

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