Voter frustration with the economy and lawmakers in Washington were the ingredients of success for Republicans this midterm election.

Exit polls revealed the economy was a major issue among voters. Nearly nine out of 10 said they feel the economy is in bad shape -- and that prompted many voters to side with the GOP at the polls.

Also, about 75 percent said they are upset with what Congress is doing, and many expressed a disapproval of President Barack Obama.

Almost 4 our of 10 voters considered their House vote an expression of opposition to Obama. Only a quarter said their vote signaled support for the president.