Democratic officials say they contacted nearly 750,000 voters over the weekend . The push sparked a bitter partisan battle between Walker and Democrats in the state legislature , and set off a wave of historic protests from union members inside and outside the state capitol in Madison . Republicans have contacted one million voters this weekend . The special election arose from a battle over collective bargaining rights for public employees . Republican Gov . Scott Walker faces off against Democrat Tom Barrett , Mayor of Milwaukee .
Democratic officials say they contacted nearly 750,000 voters over the weekend . Republicans have contacted one million voters this weekend . The special election arose from a battle over collective bargaining rights for public employees . Republican Gov . Scott Walker faces off against Democrat Tom Barrett , Mayor of Milwaukee .