We're still waiting on a decision from Tommy Thompson about whether he'll challenge Sen. Russ Feingold (D-WI). But a new poll today gives him more to think about as he explores that possibility, with a St. Norbert College Survey for Wisconsin Public Radio (400 RVs, 3/23-31, MoE +/- 5%) showing him with a double-digit lead.

Senate General Election Matchups
Thompson 45
Feingold 33
Generic Independent 14
Und 7

Feingold 40
Generic Republican 37
Generic Independent 12
Und 10

In the governor's race, Republicans appear to have a real fight on their hands in the primary between Milwaukee County Executive Scott Walker and former Rep. Mark Neumann. Walker leads Neuman 24-23 in a primary matchup, with 33 percent undecided. But either man would be considered an early favorite in November against Milwaukee Mayor Tom Barrett.

General Election Matchups
Neumann 43 -- Barrett 29 -- Und 17
Walker 44 -- Barrett 28 -- Und 14

You can see the RCP Average for both races here and here.

Only 34 percent of Wisconsins approve of retiring Gov. Jim Doyle's (D) job performance, while 50 percent disapprove. It's his lowest-ever approval rating in the survey.

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