The turnover in the House appears to be the biggest in more than 70 years.
Incomplete returns have Republicans gaining 56 House seats, and leading in several others. That's far more than the 40-seat gain they needed for a majority.
Republicans also gained at least six Senate seats, though Democrats retained control. Among the winners were tea party favorites Rand Paul in Kentucky, Mike Lee in Utah and Marco Rubio in Florida. But in Delaware, Christine O'Donnell lost badly. And Sharron Angle in Nevada wasn't able to beat Senate Majority Leader Harry Reid after a costly and brutal campaign.
Republicans have taken nine governorships from the Democrats, including the ones in Ohio and Pennsylvania. But Andrew Cuomo in New York won the office that his father, Mario, once held. And Democrat Jerry Brown has been re-elected in California to the governor's office he held more than a quarter-century ago.