Joe Biden secured a key victory in the Democratic presidential nomination race on Tuesday by winning the vital state of Michigan and delivering a major blow to his rival, the Vermont senator Bernie Sanders.
The former vice-president also notched wins in the primaries in Mississippi, Missouri and Idaho. North Dakota went to Sanders, and Washington is still to declare.
Speaking from Philadelphia, Biden sounded confident about Tuesday’s election results and struck a tone that hinted his race against Donald Trump might be beginning.