On the surface, a Mason-Dixon poll released today is terrific news for Harry Reid. The Senate majority leader needs some big breaks if he's going to secure a fifth term this November, and the survey suggests that one might be on the way, with a Tea Party-backed candidate suddenly surging into contention in the GOP primary.
Sharron Angle, a former assemblywoman from Reno, is now within 5 points of Sue Lowden, the GOP front-runner, according to Mason-Dixon. That's a marked change from a month ago, when Lowden was running away with a three-way race with 45 percent and Angle was a last-place asterisk with just 5 percent.
It's a welcome development for Reid because Angle, with her far-right views, should make for the easiest fall target. Sure, most public polls now show Angle -- just like Lowden and just like the GOP's other candidate, Danny Tarkanian -- leading Reid by a healthy margin. But the assumption is that Angle's current strength is entirely a function of Reid's weaknesses: All things being equal, the Nevada electorate of 2010 is not inclined to send a top Democratic leader back to Washington for six more years.