He has dismissed the conventional campaign playbook. He spent the last weekend before the Iowa presidential vote at home in warm Lake Jackson, Texas, rather than campaigning in the cold of Iowa.
It's the latest in a long list of "He did what?" decisions that detractors point to when arguing Paul will be unable to build on a successful showing in Iowa and eventually capture the GOP nomination.
Supporters note his two decades of electoral invincibility in Texas. But some in Paul's home district and know him best still question the viability of an approach and a political orthodoxy that would doom the average incumbent.