Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.

WASHINGTON — A majority of voters — 58 percent — favor nationwide reform of election rules that would allow all eligible voters to cast their ballots by mail, a new NBC News/Wall Street Journal poll finds. And nearly 10 percent more say that, while the rules should not be permanently changed, all voters should be able to mail in their ballots this November because of concerns that the coronavirus may still be a major public health threat this fall.

The survey shows that 58 percent of voters support allowing voting by mail generally, while 39 percent do not support it.

When an additional 9 percent of voters who back a one-time exception for November are added, a total of two-thirds — 67 percent — of the electorate supports allowing anyone to vote by mail in this year's general election. Just 29 percent disagree.

Let our news meet your inbox. The news and stories that matters, delivered weekday mornings. This site is protected by recaptcha

The majority support for voting by mail overall represents a significant change over the past quarter-century. A Pew News Interest Index poll in February 1996 found that 48 percent favored allowing voting by mail for all voters, while 47 percent opposed it.

The results of the NBC/WSJ survey come after more than a dozen states postponed their presidential primary contests or changed to all-mail formats amid worries that in-person voting would put the health of poll workers and voters alike at risk.

The rules for administering elections are determined by the states rather than by federal law. Five states, including Colorado and Washington, already conduct elections entirely by mail, and more than half of states allow voters to submit absentee ballots with no explanation needed.

Download the NBC News app for breaking news and politics

Democrats want Congress to mandate that states expand voting by mail and have argued that states may need as much as $4 billion in federal aid to shore up the resources needed for a huge increase in absentee mail voting in the fall due to coronavirus concerns.

But many Republicans, including President Donald Trump, say mail balloting could dramatically increase the likelihood of fraud. Trump said in a news conference this month that he opposes allowing nationwide voting by mail in November, saying he believes "a lot of people cheat" with mail ballots.

The partisan differences were reflected in the poll's results.

The 58 percent who support changing election laws to allow anyone to vote by mail in all elections going forward includes 82 percent of Democrats, 61 percent of independents and just 31 percent of Republicans.

And the combined 67 percent who support either permanent changes to the nation's laws or a one-time exception for November includes 88 percent of Democrats, 69 percent of independents and just 44 percent of Republicans.

The poll of 900 registered voters was conducted April 13-15. The margin of error is +/- 3.27 percentage points.