The verification of 13,317 mail ballots that need curing in Nevada could be the difference in Democratic incumbent U.S. Sen. Jacky Rosen’s race against Republican challenger

Nevada's U.S. Senate race and most House races are too early to call. Democratic Sen. Jacky Rosen has outspent Republican challenger Sam Brown by more than 3-1.

Nevada Democratic U.S. Sen. Jacky Rosen and Republican challenger Sam Brown were literally tied after initial election results were released Tuesday night, and by that time the race in Nevada was already irrelevant to control of the Senate,

Nevada Democrat Jacky Rosen is in a neck-and-neck battle in her bid to return to the U.S. Senate for a second term, while her party lost its slim voting majority in the upper chamber of Congress.

Democratic Sen. Jacky Rosen trailed Republican Sam Brown by less than 1,000 votes as Nevada counties stopped reporting results early Wednesday morning. As of Wednesday at 3 a.m., Brown led Rosen by 870 votes — or 0.

Control of the U.S. House of Representatives still hangs in the balance after Republicans won the Senate early Wednesday. Follow the latest AP race calls, results and updates on who's winning.

This would be considered a major upset. Polls and election forecasts had Jacky Rosen leading Sam Brown strongly throughout the entire campaign.