The 2020 presidential campaign of Steve Bullock, the Governor of Montana, began on May 14, 2019.
In 2017, Steve Bullock formed the Big Sky Values PAC to help him travel. On May 1, 2019 it was reported that he would announce his decision on a possible run for the 2020 Democratic presidential nomination in the week of May 13 and that he had had already hired an Iowa communications staff. On May 14, 2019, Bullock announced his candidacy.
He ended his campaign on December 2, 2019.