AUGUSTA — The Maine Senate is endorsing a bill to establish presidential primaries in the state.

With a unanimous vote Monday, the Senate endorsed legislation to establish a March presidential primary.

Senate Minority Leader Justin Alfond, D-Portland, sponsored the measure following this year’s presidential caucuses, when big turnouts led to big delays.

The proposed bill also charges the secretary of state with submitting a bill next year to address the cost of the primary and other details.

If questions remain, a sunset provision of the bill would revert the state back to caucuses.

The legislation faces addition votes in the House and the Senate.