Oshkosh millionaire Ron Johnson has a checkered history with Wisconsin tea party groups. Will they forgive and forget?
Democrats will be watching the Republican contests closely, hoping for additional upsets by tea party-backed candidates. Democrats hope the Republicans will be saddled with unelectable candidates. Republicans are looking to ride a wave of voter anger over the sputtering economy and politics-as-usual to regain control of Congress. The competition between traditional Republicans and their tea party counterparts is particularly strong in Delaware, New Hampshire, and New York. Rhode Island, Massachusetts, Wisconsin, and Maryland also hold primaries Tuesday.
Republicans are almost sure to pick up seats after the 2010 Senate races are over. But they also have an outside shot at retaking the majority in the upper chamber.
Frozen custard was Vice President Joe Biden's dessert of choice in Wisconsin (although he called it ice cream).