** FILE ** In this April 15, 2010, file photo, former Wisconsin Gov. Tommy Thompson addresses a tea party rally in Madison, Wis. Thompson is launching his Senate campaign with a rally on Thursday, Dec. 1, 2011. (AP Photo/Andy Manis, File)

Photo by: Andy Manis

** FILE ** In this April 15, 2010, file photo, former Wisconsin Gov. Tommy Thompson addresses a tea party rally in Madison, Wis. Thompson is launching his Senate campaign with a rally on Thursday, Dec. 1, 2011. (AP Photo/Andy Manis, File)