Rep. Jasmine Crockett on Monday filed paperwork to run for Democratic primary for U.S. Senate in Texas, a source tells CBS News Texas, hours ahead of a planned news conference where she is set to announce her plans.

The announcement is set to be held 90 minutes before the state's 6 p.m. CT deadline for candidates to file paperwork to run in the upcoming March 3 primary.

In the Democratic primary, Crockett will face state Rep. James Talarico of Austin, whose campaign has generated national headlines and who raised a record $6.2 million in the first three weeks of his campaign announcement.

Republican incumbent Sen. John Cornyn, Attorney General Ken Paxton and U.S. Rep. Wesley Hunt are also locked in a closely-watched battle for the GOP nomination. The final general election matchup i

See Full Page