Oscar-winning documentary maker Michael Moore has gathered a group of pensioners together to make a shocking new political ad.

The quintet of old folks urge young voters to make sure the upcoming U.S. presidential election "isn't close" by ticking a box for Democrat Barack Obama next week (06Nov12).

One 75-year-old woman pledges to "c**k punch" Obama's Republican rival Mitt Romney if he wins the election, while a 97-year-old friend suggests she'll "burn this motherf**ker down" if the wrong man gets elected to the White House in the comic MoveOn.org clip.

America goes to the polls on Tuesday to vote for a leader; Obama is fighting for a second term as President.