Glee Season 3 Episode 6 : Mash Off

Sue pursues a smear campaign against Burt in their congressional race. Glee club directors Will and Shelby encourage some friendly competition between their clubs, but Santana does not go along with the friendly part and hounds Finn, with disastrous results. Puck falls in love with Shelby, to her dismay. The candidates for senior class president debate, and Rachel withdraws from the race, throwing her support behind Kurt.