In 2008, incumbent State Representative Don Davis was unable to seek re-election due to term limits and Renuart ran to succeed him in the 18th District, which included parts of southeastern Duval County and northern St. Johns County, stretching from St. Augustine to Neptune Beach.

In the general election, he faced Dave Smith, the Democratic nominee and the former President of the Concerned Taxpayers of Duval County, and independent candidate Daniel Walsh.

In the general election, he was opposed by independent candidate Rebecca "Sue" Sharp, whom he easily defeated, winning re-election with 72% of the vote.

Renuart announced that he would run, as did fellow State Representative Travis Hutson, and both submitted their resignations from the Florida House.

[6] During the campaign, Renuart ran on his support for beach renourishment, for attracting businesses to the area to lessen the tax burden for district resident, and for offshore oil drilling.