The WaPo has a story on independent voters claiming a right to participate in primary elections under the state constitution.  The complaint is here.

Existing Supreme Court precedent on the primary process and the First Amendment mostly gives the keys to parties to choose their electorates by opening or closing primaries as they wish.  But nothing in federal law requires the state to hold a partisan primary at all.  (States with “top X” primaries generally indicate candidates’ partisan preference without purporting to choose a frontrunner on the party’s behalf.)

Meanwhile, Nevada’s Assembly speaker introduced a last-minute bill (the session ends next week) to open up primaries to independent voters, over the apparent objections of state Republicans.  (See the opening sentence of the last paragraph.)