Joe Biden and Donald Trump win Michigan primaries

The Trump campaign is looking to lock up the 1,215 delegates needed to secure the Republican nomination sometime in mid-March.

Joe Biden and Donald Trump (AP Photo, File)

US president Joe Biden and former president Donald Trump won the Michigan primaries on Tuesday, further solidifying the all-but-certain rematch between the two.

Mr Biden defeated Minnesota representative Dean Phillips, his one significant opponent left in the Democratic primary.