The party originally planned to keep the April 4 date and allow for ballot drop-offs as well as voting by mail, but later shifted the date to April 17 to enable more people to vote by mail as the outbreak worsened. All voters registered as Democrats in the state by March 20 were automatically mailed a ballot for the caucus.
Biden has won each of the six contests held on March 17 or later. Sanders suspended his campaign on April 8. Mail ballots cast in the Wyoming caucuses had to be received by Friday, but 92.6% of the total ballots cast were received before Sanders suspended his campaign.
Including the results of the Wyoming contest, Biden now holds a nearly 400 delegate lead over Sanders, according to CNN’s estimate of Democratic delegates. Biden has won 1,297 delegates, Sanders 911. Sanders said he plans to continue to collect delegates through the remainder of the primaries and caucuses.