Changes the law regarding primary elections

HB 1410 updates Missouri election laws to clarify that voters must be affiliated with a political party to vote in that party's primary election, using registration status from the Tuesday before the election to determine eligibility. The bill also establishes specific rules for how election officials can share voter data, allowing the release of names, addresses, and party affiliations to candidates and parties for a fee while prohibiting the public internet release of such lists. Additionally, the legislation creates a process for vulnerable individuals, such as undercover officers and victims of domestic violence, to petition courts to keep their residential addresses confidential on voter records to ensure their safety.