The Senate Conservatives Fund has not endorsed anyone. They state “Virginia is on our 2014 Priority List because it presents conservatives with a potential pick-up opportunity. Incumbent Democratic Senator Mark Warner has a liberal voting record and is running for re-election in a state that could be competitive for Republicans.”
There are two Republican candidates listed Howie Lind and Shak Hill. Personally I’m kind of leaning toward Shak Hill but I don’t live in Virginia so it isn’t my call. Either one would be a step up from Mark Warner.
If you have additional information, please let me know from the website.