Did DeMint ever vote to raise the debt ceiling?

Would make nice campaign point for his next opponent. “DeMint voted to raise the debt ceiling three times!” Or whatever. If he ever did. Ought to be an easy way to find out, except bills aren’t organized in such a manner that you can figure out what is in each one. Actually…how do senators know what is in each one? You could spend a year just reading one of the budgets and then it would be time to vote on the next one.