The former presidential candidate is retiring from Congress after more than 20 years. Most of that was spent representing in the 14th Congressional District, where Republican Randy Weber and Democrat Nick Lampson are vying to become Paul's successor.
Weber is a state lawmaker who burnished a reputation as one of the most conservative members in the Texas Legislature. Lampson is trying to return to Congress, and is running as a moderate in a redrawn district that is no longer as firmly Republican.
Paul seldom worried about losing. He was re-elected with at least 60 percent of the vote his last six tries.