Election workers across the Rio Grande Valley spent Monday preparing for Super Tuesday.

Hidalgo County will have 75 polling locations, which will open from 7 a.m. to 7 p.m.

Voters who cast Democratic Party primary ballots will choose between six candidates for U.S. House District 15, three candidates for the 449th District Court and a slew of local matchups. Republican primary voters have three candidates vying for District 15 and the hotly contested presidential race, among others.

About 16 percent of voters cast early ballots, said Elections Administrator Yvonne Ramon — just shy of the record-setting 18 percent turnout in 2008.

Ramon recommended voters budget extra time if they plan to visit the polls at lunch or after 5 p.m., when they may encounter lines.

“Before you go, do your research. Know who you are going to vote for and support.” Ramon said. “Be sure to take your voter ID, which is in many cases your driver’s license.”

For voters who aren’t sure where they should cast a ballot, Hidalgo County offers a handy tool at www.co.hidalgo.tx.us/elections