Carter: Trump An 'Irresponsible Candidate' (VIDEO)

'He's reached his limit on his popularity' the unpopular Former President said Friday night

Jimmy Carter was in Chicago to promote his new book, he said it's been a pleasure for Democrats to keep up with Republican candidate Donald Trump.

"He's really kind of an irresponsible candidate. He doesn't have any restraints on what he says. I think he's probably reached the limit on his popularity," Carter said.

Carter was at the Seminary Co-Op bookstore in Hyde Park to sign copies of his new autobiography, "A Full Life: Reflections at 90" ABC's WLS reported.