Winder faces management consultant Mark Crockett, a former member of the county council, in Tuesday's primary.
Crockett says voters question Winder's trustworthiness after he admitted to writing flattering stories about his city under a false name for area publications.
Winder believes voters will forgive him.
Winder says he'll be more aggressive on economic development than incumbent Mayor Peter Corroon, who is not seeking reelection.
Crockett says he's the only candidate with business experience.
The GOP winner will face state Democratic Sen. Ben McAdams in the November election.
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