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?"
That night, Lewandowski stood stage right to Trump, looking relaxed, a rare moment of rest for a man who's known among colleagues for chugging energy drinks and being in constant motion.
Until Trump hired him last summer, Lewandowski had never run a national campaign. Now he's Trump's alter ego, comfortably telling interviewers that "it's time to send somebody to Washington who is willing to fundamentally change the system and make America great again. There is only one guy willing to do that: Trump."
A Behind-The-Scenes Career In Politics
At 41, Lewandowski has spent half his life in politics, almost entirely behind the scenes and most recently as the New Hampshire director of Americans for Prosperity, the Koch-affiliated group. Lewandowski was unavailable for an interview for this story.
Before signing on with Trump, Lewandowski was known in New Hampshire political circles as a hard-charging operative who was as unafraid to take on Republicans as he was to take on Democrats. At the height of the Tea Party movement, Lewandowski mock-debated a cardboard cutout of former Gov. John Lynch at rallies.
"You know he's in with both feet and both hands and he's working 100 miles an hour, and he was a formidable adversary or an incredible ally, whatever the issue is," said state Sen. Andy Sanborn, who got to know Lewandowski during this period.