Monday night's Gossip Girl featured an intriguing political plot line, along with some vintage cattiness and backstabbing from our favorite pair of frenemies.

With the polls too close to call on Election Day, someone set Nate's cousin up to save a drowning man to make him look like a hero in his bid for Congress.

But when the plot is exposed (by Vanessa, obvs) it's up to Nate to take the fall to save Tripp's bid to represent Manhattan in Washington, D.C. It worked!

Meanwhile, Serena and Blair are going at it like never before, trying to one-up each other at the election party. It ends with Blair's fake shoved in a cake.

Elsewhere, Dan and Olivia hit another hurdle as she told an embarrassing story about him on Late Night. But Dan was more concerned with other things.

For all the details on "The Grandfather: Part II," here's our episode guide!

Serena lost a job (willingly) and a friend (unwillingly) last night.

We're compiling a list of the best quotes from Monday, as well as a list of the music played during "The Grandfather: Part II." They'll be up soon!

Follow these links, too, for plenty of videos and pictures from the night, then check back later for all the latest news, spoilers and Round Table!

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Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.