McCain acknowledges tensions in 2008 campaign

Sen. John McCain (R-Ariz.) acknowledged there were "tensions" in his 2008 campaign team, especially between top aide Steve Schmidt and Sarah Palin.

"There's always tensions that develop within campaigns," McCain told CNN's John King. "And there were clearly tensions between Steve Schmidt and people in the Palin camp."

Schmidt said recently that were Palin to win the GOP nomination in 2012, "we could have a catastrophic election result."

McCain demurred on Palin's chances to win the White House, saying the party should "go through the process rather than condemning anybody's chances."

"We have some great people out there and Sarah is one of them," he added.