“... in the March 3, 2020, Presidential Primary.”
PRIMARY.
How it should be.
I never understood “open” primaries. Why would you want people who are not members of YOUR party, decide YOUR candidates?
The argument was that having “open” primaries would have the parties nominating “moderate/mainstream” candidates rather than those at the extreme end of the spectrum by hardcore party members. Well, look how that has turned out, California has zero moderate Demonrats at the federal level. Usually, the result ends up with RINO nominees on the GOP side, so it has no net positive.