Trump, Biden aim to cement dominance in Michigan's presidential primary: Here's what to know

• Republican ex-President Donald Trump and Democratic President Joe Biden on Tuesday expect to notch decisive victories in Michigan's primary elections.
• Trump's challenge in Tuesday's race is to achieve a sweeping victory that mirrors his massive advantage in the polls and validates his claim that the primary fight is over.
• Biden faces the prospect of an organized opposition for the first time this cycle, from voters who are furious at what they see as Biden's unwillingness to demand a ceasefire to Israel's military incursion into Gaza.

Republican ex-President Donald Trump and Democratic President Joe Biden on Tuesday expect to notch decisive victories in Michigan's primary elections that will bolster their campaigns heading into Super Tuesday next week.

Both candidates face challengers within their own parties, but those few remaining rivals pose little threat to the front-runners, neither of whom have lost a single nominating contest this cycle.

Republican former United Nations ambassador Nikki Haley has vowed to keep up the fight against Trump, even after losing by 20 points in her home state of South Carolina over the weekend.

Yet, Haley still netted roughly 40% of the vote, making it less of a rout than many polls ahead of the race had anticipated. The results indicated to some political analysts that Trump's grip on the GOP may not be as firm as he asserts.

Trump's challenge in Tuesday's race, then, is to achieve a sweeping victory that mirrors his massive advantage in the polls and validates his claim that the primary fight is over.

Meanwhile, Democratic Rep. Dean Phillips of Minnesota is trudging forward with his campaign against the incumbent president, who has won all available delegates so far. Biden even beat