In Montana, where roughly two-thirds of all votes are cast by mail, a Republican-backed proposal to restrict who can turn in mail ballots is intended to make it harder to vote. That’s especially so for Native Americans who live on remote reservations and rely on post office boxes, and the proposal is similar to an existing restriction in Arizona. Arkansas may also enshrine its voter ID requirement in its constitution after Republicans there put it on the ballot.

In North Carolina, Republicans passed deceptively worded amendments that would effectively gerrymander the judicial branch by letting the legislature—which is itself gerrymandered to benefit the GOP—fill judicial vacancies, a power they plan to use to pack the state Supreme Court and flip it to Republicans. A separate amendment would deliberately gridlock the state elections board so that Democrats can't expand early voting. Polling is limited, but a recent survey found both amendments failing. Meanwhile, a voter ID amendment doesn't even specify which types of ID are acceptable and aims to suppress black voters while exempting disproportionately Republican absentee voters.

In South Dakota, Republicans became apoplectic after voters passed a 2016 initiative to impose ethics and lobbying restrictions, prompting the GOP to literally declare a state of emergency in order to repeal the measure. Activists are trying again this year, this time with a constitutional amendment that can't be overturned by the legislature that would restore those reforms and impose new rules against the legislature tampering with voter-approved measures. However, Republicans are countering by trying to require that future ballot measures win 55 percent of the vote to pass, bar them from addressing multiple topics, and ban out-of-state contributions, the last of which likely violates the First Amendment.

Meanwhile, three localities will vote on changes to the way they elect local offices. Fargo, North Dakota, could become the first place in America to adopt "approval voting" in place of plurality-winner elections. That would let voters cast one vote each for as many candidates as they approve of, and whoever has the most votes prevails. Memphis, Tennessee, will vote on whether to repeal a decade-old instant-runoff voting law that has never been implemented. Finally, Lane County, Oregon's, "STAR voting" system would let voters score candidates on a scale of one to five points. The two candidates with the highest total points would go to an instant runoff where each would receive one vote per voter who scored them highest.

In the small Denver suburb of Golden, Colorado, voters will decide whether to lower the voting age to 16 in local elections, something that's the norm in a handful of countries like Austria and Brazil. This reform has been gaining steam after a few small municipalities began enacting it across the country this decade, but it has yet to prevail in any major city.

Voters also have the chance to enact campaign finance restrictions and provide for publicly funded campaigns in several cities, including Denver, Colorado; Baltimore, Maryland; Portland, Oregon; and New York City. However, New York's amendment has divided city Democrats and could present some problems by making public money available earlier in the election cycle, which could see candidates qualify for funding yet fail to make the ballot. It also makes the new contribution limits voluntary for the city’s next elections in 2021.

You can find a more expansive list of election-related 2018 ballot measures in the chart below, and you can view our full list of measures to watch on a variety of topics in this spreadsheet. The spreadsheet details whether each measure was placed on the ballot by elected representatives or whether it was directly initiated by voters, as well as whether it's a statute or amends a state constitution or local government charter. You can also find upcoming posts in this ongoing series here.