Wisconsin Dem/GOP primaries – 74 Dem/37 GOP delegates — polls open 8 am to 9 pm ET

Hawaii Dem caucuses — 20 Dem delegates — conducted midnight to 12:30 am (Wednesday) ET

Washington State Dem/GOP primaries – non-binding for Dems/19 GOP delegates — polls open 10 am to 11 pm ET (though mostly done by mail, postmarked by Tuesday).

(Source: The Page)