On December 29th, 2008, I published a list of 14 known members of the Church of Jesus Christ of Latter-day Saints who serve in Congress.
With the November 2010 midterm elections just concluded, I decided it would be a good time to check up on how they fared. Of the 14, two senators were not up for re-election. The remaining 12 lawmakers were successfully re-elected. In addition, they have been joined by a 15th LDS member, Raul Labrador (R-ID). And they may be yet joined by a 16th member, David Harmer (R-CA), whose election is still too close to call.
Source: Except where otherwise linked, Politico 2010 election map.