From Fox News' website The Fox Nation, accessed on April 2:

The “Democrats' Rainbows and Unicorns” video was put out by the National Republican Senatorial Committee, which describes itself as “the only political committee solely dedicated to electing Republicans to the U.S. Senate.”

Previously:

Campaign Arm: Fox promotes GOP campaign video, which suggests Becerra laughed at the Pledge

GOP in Exile: Guest hosting Fox & Friends, Dana Perino expresses hope that John Boehner becomes House speaker

More Fox campaigning: Now they're plugging “Pawlenty's picks” for 2010

GOP campaign arm: Fox's anti-reform activism in overdrive

2009: A year of Fox News political activism