Kathleen Peters ran away with the Republican primary race for the vacant seat in state House District 69, winning by 14 percentage points.
The South Pasadena mayor had 51 percent of the vote. She was followed by attorney David Phillips (36 percent) and IT consultant Jim Dobyns (12 percent).
"Of course, there will be champagne," she said Tuesday night from an election party at Middle Grounds Grill on Treasure Island. "We'll celebrate, and then tomorrow we'll get busy working."
Peters, 51, the vice president of public affairs at Clearwater Regional Chamber of Commerce, has lived in Pinellas County for 27 years. She won a spot on South Pasadena's City Commission in 2008.
If elected to the House, she said she will focus on education reform.
Peters, who entered the race with a bevy of high-profile endorsements, will now face Democratic candidate Josh Shulman in the general election. They are vying to fill a new seat created in the redistricting process.