Projections are based on CNN analysis of exit poll data:

Wisconsin Republican businessman Ron Johnson has won the Senate race,
CNN projects, ending Democratic Sen. Russ Feingold's bid for a fourth term.

Oregon Democratic incumbent Sen. Ron Wyden has won his bid for re-election to his Senate seat, CNN projects, beating out Republican nominee Jim Huffman.

South Carolina Republican Nikki Haley has defeated Democrat Vincent Sheheen in the race for governor, CNN projects. Republican Gov. Mark Sanford is term-limited. 

Idaho Republican incumbent Sen. Mike Crapo has won his bid for re-election to his Senate seat, CNN projects, beating out Democrat Tom Sullivan.

Wisconsin Republican Scott Walker has defeated Democrat Tom Barrett in the race for governor, CNN projects. Democratic Gov. Jim Boyle is retiring.