This coverage is made possible through Votebeat, a nonpartisan news organization covering local election administration and voting access. Sign up for Votebeat Texas’ free newsletters here.

Texans seeking to register to vote or cast a ballot by mail may not want to wait until the last minute, thanks to new guidance from the U.S. Postal Service.

The USPS last month advised that it may not postmark a piece of mail on the same day that it takes possession of it. Postmarks are applied once mail reaches a processing facility, it said, which may not be the same day it’s dropped in a mailbox, for example.

The new policy means that even if a voter drops their mail ballot in a box by Election Day, it could be rejected if it’s not postmarked on that day. A voter registration application also could miss being postmarked by the Feb. 2 deadline.

That means it’s important to mail voter registration applications and mail ballots early, or bring election mail to a post office and request a manual postmark.

In Texas, there’s no way to register to vote online. The state requires voters to submit a voter registration application to county voter registrars in person or by mail. Mailed applications must be postmarked by Feb. 2 in order for a voter to be eligible to cast a ballot in next month’s primary election.

Mail ballots must be postmarked by Election Day and received by 5 p.m. on the following day in order to be counted.

Here’s what you need to know about the deadlines and procedures for registering and voting by mail:

When is the Texas voter registration deadline for the primary?

In order for a voter to be eligible to vote in the March 3 primary election, their voter registration application must be submitted to the county voter registrar or postmarked by Feb. 2.

Voters can register to vote at any time prior to the deadline. You can print out this form, sign it, and submit it.

What is the Texas mail-in ballot application deadline?

If you qualify to vote by mail, you must first fill out and submit a mail ballot application. For the coming March primary, all mail ballot applications must be received by the end of business on Feb. 20. That time of day varies by county.

What’s the deadline to mail in my ballot?

Election officials can tally mail-in ballots that are postmarked before 7 p.m. on March 3, which is Election Day, and received by 5 p.m. on March 4.

Can I drop it off in person instead?

Yes, but only on Election Day, when voters are permitted to drop off their mail ballot in person at the elections office. Voters are allowed to deliver only their own ballot, and must bring a photo ID. Mail-in ballots cannot be dropped off in person during the two weeks of early voting or any other time prior to Election Day.

What if I live abroad or I am a member of the military overseas?

The deadline to receive ballots from overseas voters is Monday, March 9. The carrier envelope must have a postmark showing it was in the mail by 7 p.m. on March 3 (Election Day).

For military voters who mailed ballots domestically or from overseas and who submitted a Federal Post Card Application, the deadline is also March 9. The carrier envelope does not need to have any postmark.

Natalia Contreras is a reporter for Votebeat in partnership with The Texas Tribune. She is based in Corpus Christi. Contact Natalia at ncontreras@votebeat.org.

This article first appeared on The Texas Tribune.