There is confusion in Washington State over what is different between the Caucus and the Primary, and which you should care about. It is also different according to which Party you subscribe.
The short of it is:
If you are a Republican, both the Primary and the Caucus are important.
If you are a Democrat, ONLY THE CAUCUS is important as far as choosing delegates for your candidate of choice.
Since this year Washington State has both a Caucus and a Primary, the Parties have a choice of whether to select their delegates during the Primary, during the Caucus, or in some combination of the two.
The Democratic Party is choosing all of their delegates during the Caucus. This means that voting for a Democratic candidate on the Primary ballot accomplishes absolutely nothing. So, the message to Democrats is loud and clear: GO TO THE CAUCUS. However, do not completely ignore the Primary, because there are some local issues on the ballot where your vote does count.
The Republican Party is splitting there delegates between the Primary and the Caucus. 51% of their delegates will be chosen via the Primary, while 49% will be chosen at the Caucus. The message to Republicans is to DO BOTH. Going to the Caucus counts and voting for a Republican candidate on the Primary ballot counts.
The message that I would like to share with everyone is to Please Participate. It is more important now than ever to get involved in the political process. Share your concerns with others and get intelligent dialogues going. It is truly the heart of our democracy.