As expected, former US president Donald Trump has won the Republican presidential primary in the state of Michigan, US broadcasters CNN and NBC reported on Tuesday evening based on their own forecasts. Trump’s rival Nikki Haley went down to a clear defeat, as expected. The two were a good 30 percentage points apart after around 10% of the votes were counted. Trump and Haley fought another duel for their party’s nomination in the Mid-West state with a population of around 10 million ahead of the November presidential election. Anyone who wants to become a presidential candidate in the US must f…