Until last year, the architect of Donald Trump's presidential campaign was an obscure political operative in New Hampshire.
Now, campaign manager Corey Lewandowski can claim to have engineered victories in South Carolina and New Hampshire and a second-place finish in the Iowa caucuses, a winning streak that gives Trump a strong shot at the Republican nomination.
On the night of his New Hampshire primary victory, Trump acknowledged Lewandowski's role in the win, asking, "Does Corey have a ground game or what?"