Because they can't win if they don't cheat

This is awful.

My son in Illinois had his mail-in ballot rejected for this reason, but Illinois notified him and gave him the chance to verify it so it will count.  Every state should permit that.

A federal appeals court reinstated Texas's procedures for rejecting ballots with signatures that don't appear to match those on record with elections officials, temporarily blocking a district judge's ruling that the process is unconstitutional.

A three-judge panel for the 5th U.S. Circuit Court of Appeals stayed an injunction against the mismatched-signatures procedure while a legal challenge plays out.

"Because Texas’s strong interest in safeguarding the integrity of its elections from voter fraud far outweighs any burden the state’s voting procedures place on the right to vote, we stay the injunction pending appeal," Judge Jerry Smith, a Reagan appointee, wrote in the unanimous panel's decision.

  The Hill

That's not safeguarding elections from voter fraud, that's vote suppression.

The League of Women Voters of Texas, one of the plaintiffs in the lawsuit, called Monday's decision "deeply disappointing because it allows the State to shirk its responsibility to ensure that each vote is counted.

[...]

“To prevent voter disenfranchisement mail ballots that are rejected due to a signature mismatch ought to have the opportunity to be cured," said Grace Chimene, the group's president. "We call on Texas counties to commit to notifying voters in cases of a signature mismatch as soon as possible before Election Day, and to fight for voters’ ballots to be counted—in court if need be.”

...but hey, do what you want...you will anyway.