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A voter deposits his ballot in the ballot box for the U.S. midterm elections at a polling place in Westminster, Colorado, Nov. 4, 2014.

Voters fill in their ballots as they vote in the U.S. midterm elections at a polling place in Westminster, Colorado, Nov. 4, 2014.

A woman marks her votes on a ballot at a polling site in Mount Kisco, New York, Nov. 4, 2014. New Yorkers will decide to send back Gov. Andrew Cuomo for a second term.

Because all the privacy booths are full, Miriam Rodriguez looks over her ballot while leaning against the wall at a polling site in New York, Nov. 4, 2014.

Lauren Koepp and Kara Smyth pose for a photo after casting their votes early on Election Day in Austin, Texas, Nov. 4, 2014.

A voter enters the voting booth at Bishop Leo E. O'Neil Youth Center in Manchester, New Hampshire, Nov. 4, 2014. New Hampshire features a tight race between incumbent U.S. Senator Jeanne Shaheen (D-NH) and former Massachusetts U.S. Senator Scott Brown.

U.S. Senate Minority Leader Mitch McConnell waits to cast his vote after marking his ballot at Bellarmine University in Louisville, Kentucky, Nov. 4, 2014.

Pedestrians pass by a D.C. Cannabis Campaign sign in Washington, D.C., Nov. 4, 2014. Voters in the U.S. capital and two West Coast states will decide whether to legalize marijuana in a test for broader cannabis legalization efforts across the United States.

Amelia Sinclair, 25, fills out her ballot at a polling place in a laundromat on Election Day in Long Beach, California, Nov. 4, 2014.

Democratic New York Governor Andrew Cuomo and his girlfriend Sandra Lee greet supporters after casting their ballots at the Presbyterian Church in the town of Mount Kisco, New York, Nov. 4, 2014.

Voters fill in their ballots at a polling place located in Shoaf's Wagon Wheel during the U.S. midterm elections in Salisbury, North Carolina, Nov. 4, 2014.

Republican Senate candidate State Sen. Joni Ernst casts her ballot in the general election, Nov. 4, 2014, in Red Oak, Iowa.

Queen Elizabeth II meets well wishers during a walkabout close to Windsor Castle as she celebrates her 90th birthday, in Berkshire, England.

Poll clerk Kay McClain, left, and Duane Fleener, prepare the voter lists as they get ready for the doors to open at 6 a.m. Nov. 4, 2014, at their poll location in a fire station in Avon, Indiana.

A handmade sign stuck in a snowbank on a rural road urges citizens to vote in Searsmont, Maine, Nov. 4, 2014.