Fighting from behind in the polls, Brown was combative throughout the hour-long debate against Democratic Sen. Jacky Rosen.

The sole debate between incumbent Sen. Jacky Rosen (D-NV) and Republican Sam Brown in Las Vegas, Nevada was a steady affair that lacked the fireworks of other Senate matchups this season. Brown, an army veteran,

Mr. Brown, who has never held elected office, has found himself outpaced by Senator Jacky Rosen, the low-key and well-financed Democratic incumbent. A debate Thursday night presents a key test.