Former Massachusetts Gov. Bill Weld announced Friday he has launched an exploratory committee for a possible 2020 primary challenge against President Trump.
Weld is the first person to take a serious step towards challenging Mr. Trump from within his own party. Maryland Gov. Larry Hogan, also a Republican, also hasn't ruled out challenging the president for the White House.
Weld ran for vice president on the Libertarian Party ticket in 2016.
This is a developing story and will be updated.