Dallas (WBAP/KLIF) – If you want to vote in the March 6th primaries in Texas you have one more week to register to vote. You need to submit your application by February 5th, which is at least 30 days before the primary. You can fill out an application at your county voter registrar’s office or you can print out an application online and mail it in. If you choose to mail your application, it must be postmarked by February 5th. You can’t register to vote online in Texas.