Ken Vogel and Mackenzie Wagner of Politico put a dollar figure on the massive flow of cash from conservative groups to talk radio hosts between 2008 and 2012: A POLITICO review of filings with the Internal Revenue Service and Federal Election Commission, as well as interviews and reviews of radio shows, found that conservative groups spent nearly $22 million to broker and pay for involved advertising relationships known as sponsorships with a handful of influential talkers including Beck, Sean Hannity, Laura Ingraham, Mark Levin and Rush Limbaugh between the first talk radio deals in 2008 and the end of 2012.