Mother of Uvalde school shooting victim is running to be the city's mayor

Kimberly Mata-Rubio, the mother of Lexi Rubio, one of the victims of the Uvalde school shooting, is running to be the mayor of the Texas city, she announced Thursday.

Mata-Rubio is looking to succeed Mayor Don McLaughlin, who is stepping down after nearly 10 years leading the city, about 80 miles west of San Antonio, to pursue a state House seat, according to The Texas Tribune. A special election for the remainder of McLaughlin's term will take place November 7, the city announced Wednesday.

McLaughlin, who was most recently reelected to a four-year term in 2020, will remain in office until a successor is elected, Sorayda Sanchez, the Uvalde city secretary, told CNN in an email.

"This is only the beginning," Mata-Rubio wrote on Twitter, while sharing a photo of a Uvalde Leader-News story about her campaign. She currently serves as an advertising executive for the newspaper, according to the outlet.

Mata-Rubio addressed her daughter in her post on Twitter, now rebranded to "X."

"I grieve for the woman you would have become and all the difference you would have made in this world," she said, adding, "I will honor your life with action."

Lexi was among 19 fourth graders and two teachers who were fatally shot inside Robb Elementary School in May 2022. Since the mass shooting, officials have given shifting and contradicting narratives about the police response to the incident and many questions remain over why it took more than an hour from the gunman entering the school to him being killed by law enforcement. Mata-Rubio has demanded answers from officials and has been a vocal proponent of gun control, including calling for a ban on assault rifles.

"We don't want you to think of Lexi as just a number," she said at a House hearing on Capitol Hill on gun violence in June 2022. "She was intelligent, compassionate and athletic. She was quiet, shy - unless she had a point to make. When she knew she was right, as she so often was, she stood her ground. She was firm, direct, voice unwavering."

Mata-Rubio shared her experience with grief and mother's guilt in an interview with CNN earlier this year to mark the one-year anniversary of the shooting.

"It doesn't get better. It's just been longer since we've seen her," Mata-Rubio said. "I don't think we want to move forward. I think when people ask me about that, you're asking me to move further from my last memory with her. That's uncomfortable, and I don't want to do that."

Candidates have until September 6 to file for the Uvalde mayoral special election, according to the statement released by the city. Sanchez, the Uvalde city secretary, told CNN the city hadn't received any applications as of Thursday afternoon. Former Uvalde Mayor Cody Smith is looking to once again lead the city, according to the Uvalde Leader-News.

CNN's Shimon Prokupecz, Matthew J. Friedman, Rachel Clarke, Christina Maxouris and Adrienne Vogt contributed to this report.