Two weeks ago, Republican presidential hopeful Newt Gingrich said he supports Paul Ryan’s radical House budget plan. Yesterday, Gingrich reversed course, characterizing Ryan’s plan as “radical change” and “too big a jump” for Americans. The disgraced former House Speaker went on to denounce “right-wing social engineering.”

Apparently, the House Budget Committee chairman heard about the interview.

Rep. Paul Ryan (R-Wis.) swiped Monday at Republican presidential candidate Newt Gingrich after the former House Speaker criticized Ryan’s proposed Medicare reforms.

Ryan, the chairman of the House Budget Committee, took a shot back at Gingrich, and defended his 2012 budget proposal, including its proposed Medicare reform.

“With allies like that, who needs the left?” Ryan told guest host Raymond Arroyo on conservative talker Laura Ingraham’s radio show.

For his part, Gingrich is trying to distance himself from his own comments, uttered just 24 hours ago. His spokesperson insisted “there is little daylight between Ryan and Gingrich,” before parsing the meaning of the word “radical.”

Gingrich’s campaign is bound to be a barrel of laughs, isn’t it?

Update: In related news, Gingrich yesterday expressed support for a health care mandate, which he’s endorsed for years. This morning, he announced his opposition to a health care mandate, and said he’s opposed it all along.

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Follow Steve on Twitter @stevebenen. Steve Benen is a producer at MSNBC's The Rachel Maddow Show. He was the principal contributor to the Washington Monthly's Political Animal blog from August 2008 until January 2012.