Tammy Baldwin is polling within the margin of error against all 3 of her potential Republican rivals in her bid to become the first openly gay U.S. Senator.

A new Public Policy Polling (PPP) survey released Friday shows Baldwin within 2 percentage points of former Wisconsin Governor Tommy Thompson, considered the front-runner in the race for the seat being vacated by Wisconsin Senator Herb Kohl.

The Wisconsin Representative edges out former Congressman Mark Neumann by 1 percentage point, and Wisconsin Assembly Speaker Jeff Fitzgerald by 4 points. She holds an even wider 7 point advantage against Frank Lasee.

“Baldwin's standing is much improved from when PPP polled Wisconsin in August,” said PPP's Tom Jensen in releasing the poll. “She's up 6 points against Thompson, whom she had trailed by 8, and she's doing 5 points better against Neumann, whom she had trailed by 4.”

“This will be a very tough race, but Tammy is a very tough woman,” said Chuck Wolfe, president and CEO of the Gay & Lesbian Victory Fund, a group devoted to supporting openly gay elected officials.

“She's fighting for middle-class families, and that's clearly resonating,” he added.