Today is primary day in Washington, but, for Democrats, the decision on delegates has already been made.

Washington conducts its primary elections by mailing ballots to its 4 million registered voters. The ballots must be postmarked by 8 p.m. Tuesday night or turned in by the same time to be counted. So far, according to election officials, 1 million ballots have been retuned.

READ MORE:  Why have a local primary with only one GOP candidate?

The ballots have both democratic and Republican candidates listed. However, when it comes to the Democrats, they also have a caucus process. The caucuses were held in March and Bernie Sanders won 73 percent of the caucus vote. Basically, Tuesday's Democratic primary results will be ignored.

What’s at stake Tuesday?

For the Republicans

Washington sends 44 delegates to the Republican National Convention. Thirty are allocated proportionally – three from each of the 10 congressional districts. Fourteen are at-large delegates and they are allocated proportionally to the candidates who gets at least 20 percent of the statewide vote.

>>What is a contested convention and will the Republicans have one?

For the Democrats

Sanders won the district caucuses which were held March 26. He was awarded 74 delegates. Hillary Clinton gets 27.

Washington also sends 17 superdelegates to the Democratic National Convention.

>>What is a superdelegate, and what do they do?

When will we know the results?

Voting in Washington ends at 8 p.m. PT, 11 p.m. ET. The ballots already received by mail  have been counted and results should be available  quickly.

How many delegates are needed to win the nomination?

For Democrats, 2,383; for Republicans, 1,237.

Click here to see the latest delegate count.

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