Changes the law regarding primary elections

HB 2380 changes Missouri's primary election rules by requiring voters to be registered with a political party at least 23 weeks before a primary election to participate. This affects voters who wish to change party affiliation near election time, as such changes won't take effect until after the primary. The bill also restricts public access to voter data, limiting released information to basic details like names, addresses, and party affiliation (with sensitive information like domestic violence victims' addresses protected), and requires fees for data requests by candidates or campaigns. Election authorities must maintain specific voter data fields and follow strict protocols for sharing information under the Help America Vote Act.