Research 2000 for Daily Kos (11/23-25, likely voters):
Harry Reid (D-inc): 46
Jon Porter (R): 40
(MoE: ±4%)
Looks like Nevadans are feeling kind of lukewarm about Harry Reid these days. ("Lukewarm" and "Harry Reid" in the same sentence? Wow, I'll bet that's never happened before...) In a prospective 2010 matchup, he's beating Jon Porter (who recently got bounced from his NV-03 seat by Dina Titus) by six points, although he's well below the 50% comfort level.
The numbers below the fold look worse for Reid; his approval/disapproval rating is only 38/54 (luckily, Porter's are little better at 40/39). When asked whether they'd choose to reelect Reid or consider replacing him, respondents say 32% reelect, 23% consider someone else, and 41% say replace him. Against a strong challenger with a statewide reputation, Reid could face some real trouble, leaving him possibly the only endangered Dem-held seat in 2010. However, between the badly depleted Republican bench in Nevada (Porter may truly be their best bet, as Lt. Governor Brian Krolicki may be looking at indictment rather than a run against Reid, and Rep. Dean Heller is likely to either stay in place or go for Governor) and Nevada's rapid demographics-driven bluening, this race could just as easily turn into a non-issue.