Trouble for Reid

This new poll could give some hope to Nevada Republicans:

The poll by Denver-based Vitale & Associates was conducted July 29-30 and showed that 48 percent of respondents favored [Nevada GOP chairperson Sue] Lowden to 42 percent for Reid. Ten percent were undecided. The margin of error was plus or minus 4.4 percentage points.

Of the 510 poll respondents, 44 percent identified themselves as Democrats, 38 percent as Republicans, 15 percent as independent or non-partisan, and 3 percent declined to state an affiliation.

42% is a rough number for an incumbent. His favorability rating is under 40% in this poll. Another rough number. Two questions: Will Lowden run? How would other GOP candidates fare?