The US Presidential race is heating up as both Joe Biden and Donald Trump win the Michigan Primary votes for their respective parties. 

But President Biden's victory in the Democratic race wasn't all smooth sailing, with a sizable contingent issuing a protest vote. 

Thirteen percent of voters, which says they weren't uncommitted. 

Newshub US Correspondent Mitch McCann told Mike Hosking that many are unhappy with Biden's involvement in the Israel Palestine war. 

He says Michigan has the largest Arab community in the country. 

Meanwhile, 82-year-old US Senate Republican Leader Mitch McConnell says he'll step aside in November to make way for a new generation of leadership. 

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