(THE TEXAS TRIBUNE) Former Democratic congressional candidate MJ Hegar is running for U.S. Senate in 2020.

Hegar, a former Air Force helicopter pilot, mounted a high-profile bid to unseat U.S. Rep. John Carter, R-Round Rock, in November, fueled by attention-grabbing ads and massive fundraising. She ended up losing by less than 3 percentage points in the traditionally Republican district.

RELATED: 

Veteran M.J. Hegar 'taking a very close look' at running for U.S. Senate

Texas This Week: MJ Hegar, Congressional Candidate for Texas District 31

“Texans deserve a senator who represents our values, strength, courage, independence — putting Texas first," Hegar said in an announcement video made in the style of her 2018 ads. "I didn’t get a pilot slot my first time trying. We Texans don’t give up easy, and everything we’ve accomplished is just the beginning."

To take on Cornyn, Hegar could face a competitive primary with U.S. Rep. Joaquin Castro of San Antonio, who has said he is considering a run and will make an announcement soon. Another Democratic elected official, Houston City Councilmember Amanda Edwards, has also said she is mulling a campaign.

Three mostly lesser-known Democrats are already running: Michael Cooper, Sema Hernandez and Adrian Ocegueda.

This story originally appeared on The Texas Tribune. To read this article in its original format, click here.

PEOPLE ARE ALSO READING: 

'I wasn't going to leave without getting an answer': Austin mom's instinct helps save 6-year-old son's life

'Face of drunk driving' Jacqui Saburido dies at 40, reports say

Sen. Walsh apologizes for comment about nurses on Washington Senate floor