A Head in the Polls
Futurama Season 2 Episode 7 (12/12/99)
Two identical clones run for president of Earth. The price of titanium skyrockets, so Bender sells his 40% titanium body. Richard Nixon's head makes Bender realize life stinks without a body, so he tries to buy his body back from the pawn shop. However, once there he finds out that Nixon's head bought his body and uses it so he could run for president. Nixon wins the election using the robot body.