Parroting other conservative commentators, KHOW's Caplis claimed that Barack Obama is "obviously" the "most liberal senator" Research ››› February 15, 2008 6:00 PM EST ››› MEDIA MATTERS STAFF ? Short Link copy link We've changed our commenting system to Disqus. Instructions for signing up and claiming your comment history are located here. Updated rules for commenting are here. View the discussion thread.