After his election as governor , Warren emerged as a potential candidate for president or vice president in the 1944 election . Seeking primarily to ensure his status as the most prominent Republican in California , he ran as a favorite son candidate in the 1944 Republican primaries . Warren won the California primary with no opposition , but Thomas Dewey clinched the party 's presidential nomination by the time of the 1944 Republican National Convention . Warren delivered the keynote address of the convention , in which he called for a more liberal Republican Party . Dewey asked Warren to serve as his running mate , but Warren was uninterested in the vice presidency and correctly believed that Dewey would be defeated by President Roosevelt in the 1944 election
1944 Republican National Convention
1944 Republican National Convention
Earl Warren