Former Nevada Republican Assemblywoman Sharron Angle is tied with Senate Majority Leader Harry Reid at 43 percent in the latest poll of the Nevada Senate race from Mason-Dixon Polling & Research. The two candidates remain unpopular, and the latest poll shows 4 percent of voters supporting the "none of these candidates" ballot option.

Still, in an ominous sign for Reid, the latest poll shows Angle with a 20-point lead among nonaffiliated voters (51 percent to 31 percent).

Democrats have targeted Angle, attempting to cast her and other tea party-backed Republican candidates as outside the mainstream. However, despite the heavy criticism focused on his opponent, Reid, a four-term incumbent, continues to be weighed down by dismal approval ratings and a Nevada economy with record 14.4 percent unemployment. Fifty-four percent of voters surveyed by Mason-Dixon have an unfavorable view of Reid while 47 percent have an unfavorable view of Angle.

The Mason-Dixon poll is in line with recent polls that have shown a statistical dead heat. While Reid led narrowly in most polls released in July and August, Angle has taken one-point leads in two Fox News polls and one CNN/Time poll released in September. Reid led by two points in the last Mason-Dixon poll conducted September 7th through 9th. The candidates are tied in the RCP Average.

For this poll, Mason-Dixon surveyed 625 likely Nevada voters from Monday through Wednesday. It has a margin of error of +/- 4 percent.