Bernie Sanders easily won Washington state's Democratic caucus Saturday, earning what will likely be his most signficant delegate gain of the Democratic primary contest.

Although little polling was conducted in the state prior to Saturday's caucus, Sanders bet on winning the state. Following his series of losses in the Southern primaries; the Vermont senator's campaign vowed that they would improve dramatically in the western Democratic contests.

Washington's 101 delegates were up for grabs in the contest.

Sanders led Clinton in fundraising in Washington state with about $2.6 million compared to Clinton's $2 million haul. Additionally, Hillary Clinton lost the state to Barack Obama in 2008 and Bill Clinton performed poorly in the state's 1992 caucus.

Both Clinton and Sanders made multiple campaign stops in the state during the days leading up to the primary in an effort to meet with voters and capture the majority of the state's 118 delegates.