More than a week after Election Day, control of the House of Representatives has yet to be decided. Out of the 435 seats in Congress’s lower chamber, 12 have yet to be called. How many of these seats — most of them concentrated in slower-counting Western states such as California and Arizona — does each party need for a 218-seat majority?

Voters turned out Tuesday to vote for the next President of the United States, a race between Republican Donald Trump and Democrat Kamala Harris. Democrats and Republicans are also battling for control of the U.S. Senate this election. There are 34 Senate seats up for grabs, with about a half dozen of those likely to be decided by tight margins .