The America First Party founding
Despite the dissolution of the America First Committee, some members vowed to fight on with their isolationist principles, and founded the America First Party. Its leader, Gerald Smith, was the party's presidential candidate in the 1944 U.S. Presidential Election. The results were less than encouraging for its members; Smith received 1,780 votes, mostly from the states of Texas and Michigan.
Smith's specific full party platform is not known as of the time of this writing.
The America First Party lived on in some form beyond 1944 and is believed to have been the same party (by name) formed in that year. Its platform beyond 1944 is not known at the time of this writing.