Former Vice President has won Arizona's Democratic presidential primary, according to ABC News.
Polls opened Tuesday for Democrats to pick a presidential candidate as the state deals with a public health crisis that has crippled parts of the nation -- and as the number of returned mail-in ballots has already surpassed 2016.
Voters in three states went to the polls on Tuesday for the states' presidential primary.
While the Republican primary is largely settled, the Democratic nomination race is starting to tilt toward Joe Biden's favor.
A total of 441 delegates up for grabs on Tuesday between the states of Arizona, Florida and Illinois.
Last night, Ohio announced it is postponing its presidential primary amid fears of the spread of coronavirus.
Biden entered Tuesday with 898 delegates as Sen. Bernie Sanders trails with 745 delegates. To win the nomination, 1,991 delegates are required.