People protest against the passage of a mail-in voting bill during a Nevada Republican party demonstration at the Grant Sawyer State Office Building on August 4, 2020 in Las Vegas, Nevada.

The re-election campaign of President Donald Trump on Tuesday night followed through on his threats to sue Nevada over its plan to conduct the November election almost entirely by mail-in ballot.

The suit, which claims such statewide voting by mail is unconstitutional, comes one day after Nevada Gov. Steve Sisolak signed a bill that would facilitate mail-in voting for most of the state, with a limited number of in-person polls.