Citrus Heights Councilwoman Sue Frost defeated Folsom businessman Mike Kozlowski on Tuesday to represent the northeast corner of the county on the Board of Supervisors.

Frost captured 55 percent of votes compared to Kozlowski’s 45 percent with all precincts reporting.

Tab Berg, Frost’s campaign manager, said she’s going to rest up and then dive right in.

The two Republicans emerged from a five-candidate primary to replace Supervisor Roberta MacGlashan, who decided not to run for re-election. The winner will represent a diverse group of communities including Citrus Heights, Folsom, Orangevale, Antelope, Elverta and Rancho Murieta.

Frost, 60, received the largest share of votes in the June primary. She ran as the public safety candidate, advocating for more resources for the Sheriff’s Department and more boots on the ground.

She touted her time on the council, including a year each as vice mayor and mayor. She was endorsed by the other candidates in the primary and by conservative groups such as the Sacramento County Republican Party and Gun Owners of California.

Frost is a registered nurse and a retired real estate businesswoman. She has lived in the district most of her life.

Kozlowski, 48, is a local salesman for Johnson Controls and the head track coach at Vista Del Lago High School. He lives in Folsom. Kozlowski scooped up most of the big-name endorsements during the campaign, including MacGlashan and two of her predecessors, and received considerable financial support from Region Business, a pro-development and growth organization.

Kozlowski ran as the economic development candidate, saying that an improved business climate would generate tax dollars that can address public safety and homelessness. He advocated for streamlining the building and business permit processes and continuing MacGlashan’s regular community meetings.

He has little political experience, though he ran the successful 2014 Measure G campaign for school bonds in Folsom.