Wisconsin Gov. Scott Walker's polarizing collective bargaining law is set to go into effect today. The bill sparked four months of protests, which continue each day at Noon at the state capitol routunda where solidarity songs and chants of "Recall Walker" can be heard, and have led to the recall elections of six Republicans and three Democrats.

New data by Public Policy Polling (PPP) shows that the Democrats could take over the state Senate in Wisconsin.

If they maintain all of their seats, the Democrats only need to win three of the six Republican seats in the recall election in order to gain control of the state Senate. PPP surveyed likely voters on three of the six elections from June 24 to June 26 and found that the Democratic candidates had a lead in two of the races, with the race being close in the third. Take a look at the results:

Senate district 32, currently held by Republican Dan Kapanke
      Jennifer Shilling (D): 56
      Dan Kapanke (R): 42

Senate district 18, currently held by Republican Randy Hopper
      Jessica King (D): 50
      Randy Hopper (R): 47

Senate district 10, currently held by Republican Shelia Harsdorf
      Sheila Harsdorf (R): 50
      Shelly Moore (D): 45

When it comes to the anti-union collective bargaining law, a coalition of unions have filed a federal lawsuit arguing that the law violates the U.S. Constititution because it takes away their members' rights to associate, organize and bargain.