NBC has called West Virginia US Senate race for Democrat Joe Manchin. PollTrack correctly predicted this. This is a key race for the Democrats, denying the GOP a key pick up. Without WV, the road for GOP control of the Senate just got a whole lot harder (if not impossible).

With a spate of key loses for the Democrats in US Houses races-- especially in Florida and Virginia--it is looking increasingly likely the the GOP will take over the house.

More polling in competitive US Senate Races:

FLORIDA: Quinnipiac Republican Marco Rubio swamps Independent Gov. Charlie Crist, 44% to 30%, with Democratic Rep. Kendrick Meek at 22%.

NEVADA: Suffolk University Democratic US Sen. Harry Reid edges Republican Sharron Angle, 46% to 43%. Rasmussen Angle leads Reid, 49% to 48%.

WASHINGTON: CNN/Time/Opinion Research Democratic Sen. Patty Murray leads Republican Dino Rossi, 51% to 43%.

WEST VIRGINIA: Rasmussen Democratic Gov. Joe Manchin trails Republican John Raese, 49% to 46%,\.

WISCONSIN: CNN/Time/Opinion Research Republican Ron Johnson leads Democratic Sen. Russ Feingold, 52% to 44%.

Here's a recap of the latest polls in some of the most competitive US Senate races:

ALASKA: DailyKos/Public Policy Polling Republican Joe Miller just edges write-in hopeful and incumbent GOP US Senator Lisa Murkowski, 35% to 33%. Democrat Scott McAdams is at 26%.

CONNECTICUT: Fox News Democrat Richard Blumenthal leads Republican Linda McMahon, 49% to 43%.

DELAWARE: Monmouth University Democrat Chris Coons holds a huge lead over Republican Christine O'Donnell, 57% to 38%.

ILLINOIS: Rasmussen Democrat Alexi Giannoulias leads GOP Rep. Mark Kirk, 44% to 43%, with Green Party candidate LeAlan Jones polling at 4%.

NEVADA: Fox News Republican Sharon Angle leads Sen. Harry Reid, 49% to 47%. Public Policy Polling Democrat Reid edges Republican Angle, 49% to 48%.

NEW HAMPSHIRE: Rasmussen Republican Kelly Ayotte is ahead of Democratic US Rep. Paul Hodes, 51% to 44%.

NORTH CAROLINA: High Point University Republican Sen. Richard Burr leads Democrat Elaine Marshall, 45% to 31%.

WASHINGTON: Elway Democratic Sen. Patty Murray leads Republican Dino Rossi, 51% to 38%. Fox News Republican  Rossi just edges Democrat Murray, 47% to 46%.

WISCONSIN Rasmussen Republican Ron Johnson leads Russ Feingold, 52% to 45%. Reuters/Ipsos Johnson leads Feingold, 51% to 44%.

WEST VIRGINIA: Public Policy Polling Democrat Joe Manchin has now reclaimed the lead from Republican John Raese, 48% to 45%.

With two recent polls showing considerable tightening in the West Virginia U.S. Senate race--Democrat Joe Manchin now holds an aggregate +5.5% lead over GOP challenger, John Raese, 49% to 43.5%--PollTrack moves the race from Safe Democrat to Leaning Democrat

.

A RL Repass & Partners poll in West Virginia reports that incumbent Democratic Governor Gov. Joe Manchin (D) holds an enormous lead over Republican John Raese for U.S. Senate, 54% to 32%.

PollTrack Rates The Race Safe Democrat

A new Rasmussen survey in West Virginia reports that incumbent Democratic governor Joe Manchin is way ahead of possible Republican challenger John Raese in the special election for U.S. Senate, 51% to 35%.

PollTrack Rates The Race Leans Democrat

A newly released Rasmussen survey reports that incumbent Democratic Gov. Joe Manchin hold a significant lead in the special election to be held later this year in West Virginia to fill the late Sen. Robert Byrd's seat. Manchin leads Republican Rep. Shelley Moore Capito, 53% to 39%, and crushes the Republican Secretary, State Betty Ireland, 65% to 26%.

A poll from one of the most accurate pollsters in the 2008 national cycle, SurveyUSA, also reports that Creigh Deeds is pulling away in Virginia's Democratic primary for Governor: "24 hours until votes are counted in the Democratic Primary for Governor of Virginia, momentum shifts to Deeds . . . In 4 identical SurveyUSA tracking polls, Deeds' support has gone from 22% to 26% to 29% to today 42%. Deeds finishes ahead of Terry McAuliffe, whose support has declined in each of the 4 tracking polls and who ends at 30%. Brian Moran, who has treaded water in 4 tracking polls, finishes 3rd, at 21%."