Republican vice presidential candidate Paul Ryan has cast his vote in Janesville, Wisconsin. Ryan and runningmate Mitt Romney are hoping to take over the White House from President Obama and Vice President Biden. Obama and Romney ran dead even in final polls that hinted at a result rivaling some of the closest presidential elections in history. Voters will also determine the makeup of a new Congress, choosing all 435 members of the House and 33 of the 100 senators. Analysts expect Republicans to maintain control of the House and Democrats to keep their narrow advantage in the Senate.