Once Upon a Time Season 1 Episode 8 : Desperate Souls
As the citizens of Storybrooke continue mourning Sherriff Graham's death, Emma makes her decision to run for Sheriff against Daily Mirror chief editor Sidney Glass, while Regina engages in dirty politics with Mr. Gold. Rumplestiltskin attempts to track down the ultimate power source in order to help his son avert the horrors of the meaningless Ogre Wars. At the conclusion of the episode, Emma reveals to the entire town at the debate that Mr. Gold was responsible for the fire at City Hall. She backs down from the race only to later discover that the citizens unanimously elected her Sheriff after seeing her stand up to Mr. Gold. Emma finds Mr. Gold in her new office and questions him about the fire only to learn it's part of the favor she owes him - and that payment is soon approaching.