Not an American

How the fuck does a Republican openly run in a democratic primary???

Different states have different rules on who can run in a primary, with some states being very lax and letting anyone who can run no matter party affiliation. Also, in some states, people can vote in any party regardless of party affiliation.

This was done as several states recognized that the two party system didn’t always produce the best candidate. Instead of creating systems allowing for more parties, these states created systems that weakened the power of that state’s or the counties’ political parties.