You should have received your voter registration card from your County Elections office already. Hidalgo County voters have been receiving theirs in the mail this week. If you just scan your mail, look for a yellowish postcard.
It is important to have your card this election to avoid confusion as to where you should vote. Some lines have changed, thanks to redistricting. Your voter card should have your voting precinct listed. However, if you are unsure, then you can visit https://team1.sos.state.tx.us/voterws/viw/faces/SearchSelectionVoter.jsp to find your precinct.
There is no need to tell you that there is a lot at stake in the general election; but, it all starts in the primaries.