Rachel Maddow & National Review's Rich Lowry Battle Over Ryan's Budget Plan

Sparks flew Sunday during NBC's "Meet the Press" when MSNBC host Rachel Maddow and National Review's Rich Lowry clashed over Rep. Paul Ryan's budget plan.

Maddow dismissed the notion that a Romney-Ryan GOP ticket would appeal more to voters concerned about the economy, calling the House Budget Committee chairman's plan "more ripe for attack than it is for appeal" and saying it has shades of "voodoo economics" with vague proposals about closing tax loopholes.

"It doesn't have very many numbers in it," Maddow said before Lowry stepped in.

"It's not a tax cut, it's designed to be revenue neutral," Lowry said.

The two went back and forth over the genesis of the plan before ultimately settling in on the subject of Medicare cuts. Lowry noted President Barack Obama has set up $700 billion in cuts to Medicare over the next decade, which Maddow pointed out the Ryan plan keeps in place. Lowry had said earlier that Romney wants to repeal those cuts.

"Do you support $700 billion in cuts in Medicare over the next 10 years?" Lowry asked.

"I'm not running for president. Paul Ryan is — " Maddow replied.

"Do you? Do you?" Lowry asked.

"I'm not running for anything," Maddow repeated.

"Do you? Why can't you answer it? Why can't you answer?" Lowry demanded.

"Paul Ryan is running for vice president -- " Maddow said.

" -- See you can't answer," Lowry said, a pattern that continued for nearly a full minute.

Watch the full clip below, via NBC: