If Mitt Romney wins the Republican nomination for president, Tea Party activists may not show up at all to vote in the general election, one leading group associated with the Tea Party movement is warning.

“I think that’s a potential problem,” said Matt Kibbe, FreedomWorks’ president, during a wide-ranging interview with reporters at The Daily Caller.

He also warned that if Republicans nominate another “John McCain,” activists might even vote third party in 2012.