Austin, Texas – Congressional hopeful Greg Casar was joined by Rep. Alexandria Ocasio-Cortez on Sunday to spread the word of his candidacy and inspire voters ahead of the Texas primaries.

When you're a progressive Democrat running for Congress in a state like Texas, having a powerful politician like Rep. Ocasio-Cortez's endorsement and support is a major win.

That's just what congressional candidate and former Austin City Council member Greg Casar had going for him at the Rally for Our Rights fundraising event on Sunday.

The rally, held at Mohawk in downtown Austin, focused on the power of Latino organizing as a means to help fundraise for and spread awareness of Casar’s congressional campaign.

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"I started my entire organizing life here in the state of Texas. A lot of people don’t know that," Ocasio-Cortez (32) told the crowd.

"It was when I first started coming out here as a teenager and in my early 20s that really led me to believe even back then that the seat of change in this country is going to come from the state of Texas."

The New York representative toted Casar's work with the Austin City Council, and how he nearly doubled the wages of the city's lowest paid employees in his former role as a city council member.

During her time on stage, Ocasio-Cortez reiterated the importance of the Texas primaries, and why the state needs a representative like Casar in its corner.

"There is too much at stake for us to resign this November," Ocasio-Cortez told the crowd. "We will not just lay back and allow fascism to roll out in the United States of America. We will not accept that as a foregone conclusion."

Casar – who is running for Congress in Texas' 35th Congressional district – made a promise to be a "progressive champion" for marginalized communities, women's reproductive rights, workers' wages, cancelling student debt, the Green New Deal, and Medicare for all.

"We are united today with a belief that cannot be shaken. That this is our state, this is our home, these are our families, and we are going to organize like hell until this democracy delivers," Casar told the crowd.

"We know progressive change is on the horizon, not in some faraway place away from Texas," Casar said, adding, "Progressive change has deep roots in Texas."

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The 32-year-old congressional candidate went on to say he's not only asking for Texans' vote in the Democratic primary – where he's facing Eddie Rodriguez, Carla-Joy Sisco and Rebecca J. Viagran for the district 35 nomination – he's also, "Asking for you to participate in a struggle that is much bigger, and that goes far beyond elections."

Despite rallying up an impressive gathering of supporters in Austin, Casar and Ocasio-Cortez continue to face criticism from the Republican party.

Following Sunday's event, a spokesperson for the Republican National Committee told CBS Austin, "We invite AOC to come to Texas as often as she can. Every time she comes to the Lone Star State, it’s a gift because she reminds Texans of how much they despise socialism."

Early voting for the Texas primaries kicked off on Monday and will run through February 25, while Election Day is March 1.