(CNN) - The first of nine recall elections will take place Tuesday in Wisconsin, with incumbent Democratic state Sen. Dave Hansen pitted against Republican David VanderLeest, the latest fallout from the bitter state battle over collective bargaining rights that shut down the state legislature for weeks in February and March.
Two other Republican primaries are also slated in the state Tuesday, the winners of which will compete in a recall election on August 16.
The contests follow Democratic primaries earlier in the month for six seats Republicans currently hold. Official results from those contests are not yet available but the winners will face their own recall elections next month.
The elections stem from a law, which was upheld by the state Supreme Court in June that sharply divided the state earlier in the year. Republicans insisted the measure was necessary to control the skyrocketing costs of public employee benefits and close the budget shortfall. Democrats argued that it was an attempt to gut public-sector labor unions, one of their core constituencies.
In the recall elections, state Democrats object to Republican legislators' support of the collective bargaining law while Republicans are critical of Democratic lawmakers who left the state during negotiations in opposition to Republican Gov. Scott Walker's agenda, in an effort to block the bill. While the debate waged on, the fleeing lawmakers and protests at the state capitol made national headlines.
Under the Wisconsin law, all public workers except police and firefighters would be required to cover more of their retirement plan contributions and health care premiums.