(CNN) - Samuel Wurzelbacher, better known as "Joe the Plumber," won Tuesday's Republican primary in Ohio's 9th Congressional District, according to unofficial vote results from the Ohio Secretary of State.
With 100% of precincts reporting, Wurzelbacher bested opponent Steven Kraus to become the GOP nominee and will face Democratic Rep. Marcy Kaptur, the longest serving woman in the House of Representatives, in the fall.
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Kaptur defeated longtime Rep. Dennis Kucinich in a closely-watched Democratic primary Tuesday that pitted the two incumbents against each other after the state redrew its lines in a redistricting battle.
Wurzelbacher rose to GOP fame in 2008 when he challenged then-presidential candidate and Sen. Barack Obama over his small business tax plan.
The confrontation quickly became a popular anecdote in the presidential election and was frequently used as a campaign message by then-Republican presidential candidate and Sen. John McCain and his then-running mate and Alaska Gov. Sarah Palin.
The plumber-turned-celebrity has since capitalized on his popularity by writing a book and making media and campaign appearances.