Vice president Kamala Harris has selected Minnesota governor Tim Walz to be her running mate, choosing a long-time politician who Democrats hope can keep new-found party unity alive.Ms Harris said in a post on social media that Mr Walz has "delivered for working families". The two will appear together in Philadelphia at an evening rally.

Vice president Kamala Harris has selected Minnesota governor Tim Walz to be her running mate, choosing a long-time politician who Democrats hope can keep new-found party unity alive.Ms Harris said in a post on social media that Mr Walz has "delivered for working families". The two will appear together in Philadelphia at an evening rally.