On February 3, the Indiana Senate Elections Committee passed SB 201. It changes Indiana from an open primary to a closed primary. Here is the text.
Like many of these bills, there is no acknowledgment of the U.S. Supreme Court decision Tashjian v Republican Party of Connecticut (1986), which said that if parties want to let independents vote in their primaries, state law cannot interfere. The Indiana bill has no provision for parties with primaries to decide this for themselves, and merely says that no one may vote in a primary if that voter is not registered in the party.