"I think it'll help us," Trump said about Elon Musk's "America Party." He added that "third parties have always been good for me."

Musk said he wants to form the America Party. A third party has never won the presidency, but they have influenced elections, experts say — mostly as spoilers.

Ken Martin, the chair of the Democratic National Committee, said Musk's effort is "going to have to be taken serious by both parties."