By Justin Sink
LaHaye's Left Behind series has sold tens of millions of copies and dominated The New York Times bestseller list. The novels, which chronicle a fictionalized version of the biblical end times, had been adapted into a movie trilogy and video game.
Gingrich named LaHaye as national co-chairman of his Faith Leaders Coalition.
"I am honored to have Tim's endorsement. His work as both a minister and author is truly unmatched," said Gingrich in a statement. "Tim will be a terrific partner for the Gingrich Faith Leaders Coalition as we work to combat the influence of radical secularism and activist judges."