Early voting for the March 3 election started this week. Here’s what to know about voting in the primaries.

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Registered voters in Dallas County can cast ballots at any polling location during early voting, which ends Feb. 28. Check your voting status and find a location via the Texas Secretary of State or Dallas County.

Also, thank goodness for the Texas Tribune, where it’s easy to look up your ballot.

Several local Democrats are running against incumbents for statewide office.

Among the field of 12 Democrats vying to challenge U.S. Sen. John Cornyn in the November election is Texas state Sen. Royce West, who has represented a district that includes part of Oak Cliff since 1992. Another is Cristina Tzinztún Ramirez, a co-founder of the Workers Defense Project, whose family split time between Ohio and Oak Cliff when she was growing up.

Two of our neighbors are running in the Democratic primary for Texas Railroad Commissioner, the official who presides over the agency that regulates the oil and gas industry in Texas. That’s former state Rep. Roberto Alonzo, whose name appears on the ballot as Roberto R. “Beto” Alonzo, and oil and gas attorney Chrysta Castañeda.

If no candidate gets more than 50 percent of the vote in any race, then voters will choose between the top two vote-getters in a runoff election May 25.