The Republican incumbent governor Mark Sanford learned a lesson Tuesday morning: you need the right identification to vote in South Carolina - even if you are the governor. Sanford had to make a second trip to Sullivans Island polling area before he could cast a ballot Tuesday morning.

After being sidelined by the last-minute eye injury on Monday, the last day of campaigning, the Republican on Tuesday forgot his voter ID card and poll workers turned him away when he showed a driver's license with a Columbia address.

"I hope my luck turns," Sanford said. "Yesterday, I had the eye issue, today I was absentminded and didn't have my voter registration card."

The 46-year-old self-styled, penny-pinching maverick, who served three terms in the U.S. House, said he won't have to worry about voting for himself anymore this is his last campaign.

The governor had to come back about 90 minutes later and cast his ballot.

According to the SC State Election Commission's web site, voters can obtain a duplicate registration card, even on Election Day, if their card is lost or stolen.