ATLANTA (AP) - As he winds down his presidential campaign, Newt Gingrich faces a new challenge: reinventing himself politically yet again.

What could follow a run for president that saw Gingrich leading at times in national opinion polls?

Several Republican leaders say they expect this race to be Gingrich's last for the presidency. He had contemplated a run in 2008 but eventually decided against it.

However, Gingrich's spokesman, R.C. Hammond, says it is too early to discuss what Gingrich might do next. And Hammond says Gingrich has spent his entire career proving pundits wrong and will be happy to do so again.

Gingrich told supporters Wednesday that he was beginning to wrap up his campaign and acknowledged that rival Mitt Romney would probably be the GOP's nominee.

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