Since Rasmussen last polled in Washington a month ago, Sen. Patty Murray (D) has retaken a lead over potential challenger Dino Rossi (R). But she's lost ground to some other announced candidates, and fails to pass the 50 percent mark against any Republican.

General Election Matchups
(500 LVs, 4/6, MoE +/- 4.5%)
Murray 48 (+2 vs. last poll, 3/9)
Rossi 46 (-3)
Und 4 (+2)

Murray 48 (unch)
Benton 40 (+3)
Und 8 (-4)

Murray 47 (-2)
Didier 37 (+7)
Und 11 (-4)

Murray 46 (-1)
Widener 37 (+5)
Und 12 (-4)

Murray 45 (no trend)
Akers 37
Und 13

Washingtonians are evenly split on health care legislation, with 45 percent each saying it would be good and bad for the country. Fifty-one percent would favor a repeal effort, while 47 percent oppose it.

President Obama's job approval rating has jumped 4 points in a month, and now stands at 54 percent with 43 percent disapproving. Gov. Christine Gregoire (D), who defeated Rossi twice, also saw a bump in approval, from 40 percent to 44 percent this month.

--------------------------------------------
Follow the RCP Blog on Twitter.
Become a fan of RCP on Facebook.
--------------------------------------------