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.

If Brown wins, it could expand Republicans' likely majority in the U.S. Senate. If Rosen wins, it could make controversial bills harder to pass.

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,

Democratic Nevada Sen. Jacky Rosen and her opponent, Republican Sam Brown, both believe their final message to voters will win them a seat in the U.S. Senate -- voters have until Election Day to decide.

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.

The two major candidates for Nevada's U.S. Senate seat cast their ballots Tuesday morning as close attention is paid to which party will control the Congression