A proposed ballot question calls for a ranked-choice voting method in future state elections and primaries in Massachusetts.
Supporters filed the measure in advance of Wednesday's 5 p.m. deadline for submitting initiative petitions with the state attorney general's office.
Under a ranked-choice system, voters can place candidates in numerical order of preference, from their No. 1 choice down to their least favorite.
The system allows for multiple tabulations when no candidate receives more than 50 percent of the first-choice votes.
The proposal faces a number of hurdles before it could reach the ballot in November 2020. If voters were to approve of it, the ranked-choice system would take effect in the 2022 elections.
Maine became the first U.S. state to use ranked-choice voting in primary elections last year.
