A former Georgia GOP executive director, he lost a 1996 bid for Secretary of State before winning a 2002 contest to represent the Gwinnett-based Senate seat. He flirted with a run for lieutenant governor ahead of the 2010 election, when it seemed likely Casey Cagle would run for governor.
With Cagle definitely running for the state's top job - he formally kicked off his campaign on Sunday - Shafer said Friday he's in the race for Georgia's No. 2 gig.
Shafer, 51, would likely center his campaign on slashing state spending. He is known in the statehouse for legislation requiring zero-based budgeting, which supporters say mandates agencies to justify their spending. He also sponsored a constitutional amendment to cap the state's income tax at 6 percent. It was overwhelmingly approved by voters in November.