It also happens to be the place that best illustrates the solution to America’s historically low voter turnout. The U.S. already has some of the lowest participation rates in the developed world. The new coronavirus threatens to make that problem even worse by turning the act of voting itself into a potential health risk.

While Suncrest feels like one community—it has one Mormon church and one restaurant—it’s divided into two counties: Salt Lake and Utah. In fact, the county line runs right down the middle of it. Both sides are similar in population size; each is 90 percent white. In the 2016 election, however, they had dramatically different voter turnout rates. Suncrest’s Salt Lake County residents showed up to vote at a rate nearly 18 percentage points higher than their Utah County counterparts, with about 81 percent of Salt Lake’s registered voters casting ballots compared to Utah’s 63 percent.

What made the difference? The two counties used different voting systems. Whereas Utah County stuck with the traditional model of people lining up at polling places to cast ballots, Salt Lake County switched to conducting its election entirely by mail. Under that system, otherwise known as “vote at home,” voters receive their ballots in the mail weeks before Election Day and can either mail them back or drop them off at a secure site. In other words, Suncrest, a demographically homogenous community, offered something no other part of the country has: a natural experiment to compare traditional voting to voting at home.

Usually, an electoral reform is deemed successful if it increases voter participation a few percentage points. The jump in Salt Lake County’s turnout was on a whole other level. And the disparity wasn’t limited to Suncrest. In that same election, 21 of Utah’s 29 counties had switched to vote at home. Those counties had an average turnout rate of nearly 9 percentage points higher than those that voted the old-fashioned way—and 5 percent higher than was predicted by a generally accurate turnout forecast, according to a study by Pantheon Analytics that was commissioned by the Washington Monthly. [...]

In the U.S., the two greatest tragedies of the coronavirus outbreak are that the federal government waited too long to act and that a vaccine against the disease is likely a year or more away. Fortunately, neither is the case when it comes to elections. A proven solution is at hand. There is still plenty of time to roll out vote at home before the November elections—if we do so carefully, as Utah did.