S2, E13: Zack and Jessie are both running for class president. Zack decides to run only because he found out the winner of the election gets a trip to Washington D.C. Slater overhears Zack telling Screech about this, so Slater tells Mr. Belding about it. Mr. Belding tells Zack the trip was canceled--and that the only way Zack can prove he wasn't running just to get the trip is to stay in the election. Zack was ahead, but now he tries to lose. In the end he wins anyway, but Jessie is so upset that he confesses to her and promises to tell Mr. Belding the truth and resign the presidency in favor of Jessie.