Meet some of the voters behind "operation hilarity."  That's the online code name for Democrats who supported Rick Santorum in the Michigan primary just to embarrass Mitt Romney.

"You voted for Rick Santorum?" asked ABC's Jonathan Karl of a group of Democratic women at Santorum's primary night party in Novi, Michigan, Tuesday night.

"Yes!," said Dawn Gallup. "He's the best chance of Michigan to get Barack Obama elected."

They didn't quite make Rick Santorum the winner of total votes in Michigan on Tuesday, but the women we found - school teachers - were gleeful at the opportunity to help him.  Santorum did split the delegates with Romney in Michigan. And Democrats from "operation hilarity" are a big reason why. Ten percent of the voters taking part in Michigan's open primary were Democrats. More than half of them supported Rick Santorum.

"In Michigan it seemed to be a movement - something to do if you're a Democrat," said Monica Harris, another Democrat who went to Santorum's victory party with Gallup.

"Just to mess with the Republicans?" asked Karl.

"I think so," she said, laughing.

"It's the American way, right?" said Gallup.

Another woman said she didn't vote because, she said, "I couldn't pull the lever" for Santorum.