MILWAUKEE - US political activists converged on Wisconsin on Sunday to join get-out-the-vote efforts two days before a historic election on whether to recall Republican Governor Scott Walker that is seen as a test for November's presidential race.
Walker enraged labor unions by denuding their power with a news state law last year, and the battle has taken on national significance with some calling it the second most important US election of the year.
Wisconsin is a good testing ground for the November 6 presidential election because it is closely-divided politically -- voting for President Barack Obama in 2008 but electing Walker and a Republican legislature in 2010.
The division over the recall extends all the way to the White House race. Presumed Republican nominee Mitt Romney has called Walker a "hero," while Obama has supported Walker's Democratic challenger, Milwaukee Mayor Tom Barrett.