If you live in Texas, make sure to register to vote! The deadline is coming up in a few days on the 7th. Note that for Texas you must register either in person or by mail, you cannot register online unlike most states
Find information on how to register to vote anywhere https://vote.gov/
We don’t have national ID or election systems. So with early voting it would be legitimately possible to register and vote multiple times in multiple places without the deadline.