BONHAM, Texas (KTEN) — The Texas Primary elections were less than a week ago, and the focus now for county election administrators is gearing up for the May special election.

Both the Fannin County Clerk and a Grayson County election worker told KTEN their biggest challenge on March 1 concerned mail-in ballots.

Almost half of Fannin County's absentee ballots were not accepted when originally received.

Changes to Texas mail-in ballots were part of Senate Bill 1 signed into law last year.

Fannin County Clerk Tammy Biggar says voters sending in their vote must now include the last four digits of their Social Security or driver license number, something that was not previously required.

Fannin County saw a 46 percent failure rate on absentee ballots received for the March 1 election, and she believes that may have to do with the size of the wording on the ballot.

"What is difficult is this side right here; the print is really small," she explained. "I know you'll take a close-up, but you couldn't see it otherwise. You have elderly voters who don't see well to start with; then they have to get with this flap here."

The next election in Texas, a special election, is on May 7. Biggar hopes there is a solution to the mail-in ballot failure rate before the General Election in November.

Overall, about 22 percent of registered voters cast a ballot in the Fannin County primary election through absentee, early, and election day voting.