Bristol Palin and fiance Levi Johnston

Bristol Palin, the pregnant 17-year-old daughter of Republican Vice Presidential candidate Sarah Palin, has been caught getting high on pot – all on video-tape, the National Enquirer reports.

The video footage allegedly features a 15-year-old Bristol smoking marijuana during a drunken teen party.

“The video was taken right before Bristol’s mom became the governor of Alaska,” an Enquirer tattle has revealed. “One of our pals was videotaping everyone as they drank and got high…One of Bristol’s mouth and says out loud, ‘And here’s the future governor of Alaska’s daughter.”

The insider says it was just an ordinary day in the life of hard-partying wildchild Bristol.

“Bristol smiles at the camera, puts her lips around the pipe and inhales deeply. She holds the smoke in for a while, exhales, coughs a few times and then laughs uncontrollably.”

So on November 4th, make sure to vote for Sarah Palin, a great mother!