Candidates are making their final push for votes on the last day of campaigning for Tuesday's US Congressional mid-term elections.
President Barack Obama's Democratic party is expected to lose its majority in the House of Representatives and is struggling to keep the Senate.
Mr Obama spent the day at the White House attending meetings and recording radio interviews.
Republicans hope to capitalise on voters' discontent with the economy.
"We're hoping now for a fresh start with the American people," Republican National Committee chairman Michael Steele said on Monday.
"If we don't live up to those expectations, then we'll have a problem in two years".
Up for election on Tuesday are all 435 House seats, 37 of the 100 seats in the Senate, governorships of 37 of the 50 states and all but four state legislatures.
The Republican Party needs to gain 39 House seats to win control of the lower chamber of Congress - an amount opinion polls suggest they will easily win - and 10 to take over the Senate.
Democrats are hoping to hold on to the Senate by at least one or two seats.
In addition, voters will decide on ballot measures ranging from marijuana legalisation in California to a referendum in Oklahoma on forbidding judges from using Islamic Sharia law in rulings.