JAMES ISLAND -- Bill Woolsey was certified Thursday as the winner of the mayoral election in James Island, officials said.

Four candidates were certified as winners of the Town Council race: Robin Welch, Carter McMillan, Karen Wilder-Smalls and Leonard Blank. Blank was the lone incumbent to be re-elected Tuesday.

There were no election challenges filed by candidates, town Election Commission Chairwoman Toni Reale said. When 28 provisional ballots were counted and included in the totals, the additional votes did not affect any of the outcomes.

About 28 percent of the town's 13,132 voters cast ballots. Woolsey gathered 39.7 percent of the vote in the mayor's race, besting incumbent Mayor Mary Clark, with 19.9 percent, and three other challengers.

There was a close finish in the race for the fourth council seat. There was some question late Tuesday as to who had won the seat, but Blank edged challenger Denny McKeever by 80 votes in the final tally.

Because voters approved a referendum question concerning extending council and mayor's terms to four years -- and establishing a system of staggering elections so that the entire council doesn't come up for election in the same year -- Woosley will be the town's first mayor chosen for a four-year term.

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Welch and McMillan, the top two vote-getters in the council race, will serve four-year terms, and Wilder-Smalls and Blank will serve two-year terms. Beginning in 2012, all council terms will be four years.

Voters also approved expansion of council from the current four seats to six. The town is waiting for the necessary U.S. Justice Department approval before advancing the plan, town Attorney Bo Wilson said.