ROCHESTER, N.H. — At a town hall meeting here Thursday morning, a New Hampshire voter spotted a curious green bracelet on the right wrist of presidential candidate Chris Christie.

When the voter asked the New Jersey governor what his wristband was for, Christie said he was showing support for Maryland Gov. Larry Hogan, a fellow Republican who recently said he was diagnosed with non-Hodgkin's lymphoma, an advanced form of cancer.

"This is a guy with incredible courage and understanding for what it means to be a leader," Christie said of Hogan, whom he called a "dear friend."

As chairman of the Republican Governors Association in 2014, Christie campaigned several times last year for Hogan's underdog gubernatorial campaign and steered resources to his efforts in the critical closing weeks of the race. The two men have become close political allies and friends.

Christie pledged to continue wearing the "Hogan Strong" wristband until Hogan's condition improves.

“I’m hoping that I’m going to be able to cut this thing off once the doctors give Larry the good news that he’s in remission," Christie said.

Here's what you need to know about lymphoma. (McKenna Ewen and Gillian Brockell/The Washington Post)