The Washington State Legislature has allocated $11,497,000 for a presidential primary in 2016 (SB 6052, page 14). The Legislature passed on a primary in 2012 due to budget concerns.
The default date in state lawis May 23, 2016. Secretary of State Kim Wyman proposed March 8, but that proposal did not pass.
The state Democratic party will use its caucus system to select delegates. The state Republican party will select half of its conference delegates by caucus and half by primary vote.