Washington, Oct 9 : Republican presidential candidate John McCain while speaking to his supporters in Bethlehem, Penn, referred to them as "my fellow prisoners".

The presidential race has become the malaprop marathon, the Daily News reported.

At a Pennsylvania rally on Wednesday McCain referred to "my fellow prisoners," when he apparently meant to say "my fellow Americans."

It came amid a riff cracking Obama. But instead of drawing cheers, the puzzled audience was silent. 

Hours earlier a Democratic official introduced vice presidential nominee Joe Biden at a Florida rally as "the next Vice President of the United States, Joe McCain."

The audience erupted anyway.

And Barack Obama had his moment at the debate on Tuesday, mangling a popular idiom by saying he was "green behind the ears," (ANI)