IMMIGRANTS ARE VOTING IN AMERICA'S ELECTIONS. IS THERE ANY EVIDENCE TO BACK IT UP? >> Reporter: ON THE DEBATE STAGE -- >> A LOT OF THESE ILLEGAL IMMIGRANTS COMING IN, THEY'RE TRYING TO GET THEM TO VOTE. >> Reporter: -- AND AT CAMPAIGN STOPS ACROSS THE COUNTRY -- >> THEY'RE NOT CITIZENS. THEY'RE NOT ALLOWED TO DO IT. IT'S ILLEGAL AS HELL. >> Reporter: -- FORMER PRESIDENT TRUMP REPEATS FALSE CLAIMS ABOUT MIGRANTS VOTING. >> Reporter: THAT'S NOT TRUE. IT'S ILLEGAL FOR NON-U.S. CITIZENS TO VOTE FOR PRESIDENT OR IN ANY FEDERAL ELECTION. AND THERE HAVE BEEN FEW RECORDED INCIDENTS OF NON-CITIZENS TRYING TO VOTE ILLEGALLY. THERE'S NO EVIDENCE OF ANYONE TRYING TO GET UNDOCUMENTED MIGRANTS TO VOTE. THOSE 17 CITIES AND TOWNS ALLOW PEOPLE WHO ARE NOT CITIZENS TO VOTE LOCALLY, INCLUDING IN D.C., EVEN THOSE LOCALLY CAN VOTE IN LOCAL ELECTIONS. >> ANY D.C. RESIDENT CAN REGISTER TO VOTE, EVEN IF THEY'RE NOT AN AMERICAN CITIZEN. BUT WHEN THEY GET TO THE POLLS, THEY'LL BE GIVEN A DIFFERENT BALLOT, LIKE THIS ONE, THAT ONLY LISTS LOCAL CANDIDATES FOR POSITIONS LIKE THE SCHOOL BOARD AND CITY COUNCIL. >> I DO NOT HAVE A DRIVING LICENSE OR A SOCIAL SECURITY. >> WE CHANGED THE LAW TO MAKE SURE ALL LOCAL RESIDENTS ARE ABLE TO HAVE A VOTE AND HAVE A SAY IN THEIR GOVERNMENT AND IN THE DECISIONS THEY MAKE. >> Reporter: CHARLES ALLEN IS ON THE D.C. CITY COUNCIL. >> COULD YOU BE REGISTERED IN ANOTHER COUNTRY AND VOTE HERE? >> Reporter: YOU WOULD HAVE TO BE A RESIDENT HERE AND CLAIM RESIDENCY HERE FOR MORE THAN 30 DAYS. WE'VE SEEN HYPOTHETICALS WHERE PEOPLE THROW THINGS LIKE THAT OUT AND THEY JUST DON'T HAPPEN. >> Reporter: THE STATE OF TEXAS SAYS IT FOUND ALMOST 2,000 NON-CITIZENS WHO HAVE PREVIOUSLY VOTED, BUT IT'S UNCLEAR IF THEY'VE BEEN CHARGED. AND LIBERAL ADVOCACY GROUPS QUESTION THE CLAIMS. STILL, THE LAWS ALLOWING NON-CITIZENS TO VOTE LOCALLY HAVE SPARKED BACKLASH ACROSS THE COUNTRY AND FUELED TRUMP'S CLAIM OF WIDESPREAD MIGRANT VOTING, WHICH HAVE BEEN ECHOED BY ELON MUSK, AND INSPIRED A BILL THAT WOULD REQUIRE PROOF OF CITIZENSHIP TO REGISTER TO VOTE. >> IF YOU SEE THE FORM, YOU JUST CHECK A BOX. SO, NON-CITIZENS ARE ON VOTER