UNDATED (WSAU) Early voting has started in the Wisconsin recall primaries.

Absentee voting began Monday at municipal clerks’ offices for governor, lieutenant governor, and four state Senate seats. There are primaries for all six posts, and the winners will face the Republican recall targets in early June. The state’s open primary rules apply. People can only choose one party to vote in. But unlike many states, they don’t have to publicly ask for a particular party’s ballot, and they can make that choice in the privacy of the voting booth.

The only Republican to have a primary is Governor Scott Walker. State Capitol protestor Arthur Kohl-Riggs said he just wanted a spot on the ballot to make sure Republicans don’t cross over en masse, and vote in the Democratic primary to try and give Walker a weak challenger.

Early voting can be done at clerks’ offices until the end of the day on Friday, May 4. The primaries will be held the following Tuesday. The state Government Accountability Board’s Web site has sample ballots. Voters can also check there to make sure they’re registered.