Mitt Romney and Hillary Clinton both spent Thursday campaigning . Romney has left the door open to another presidential bid . A former Romney aide suggested Romney 's more recent campaign trail experience would make him more comfortable on the stump . TL;DR The Republican nominee is expected to announce his running mate on Friday, a source close to him tells CNN.
Mitt Romney and Hillary Clinton both spent Thursday campaigning . Romney has left the door open to another presidential bid . TL;DR The Republican nominee is expected to announce his running mate on Friday, a source close to him tells CNN.