By Eric Bradner, CNN
Tuesday, March 8, 2016 – Updated 7:52 AM ET

  • Hillary Clinton and Donald Trump are looking to pad their delegate leads Tuesday
  • Michigan is the big prize; Democrats and Republicans also vote in Mississippi
  • Republicans vote in Hawaii and Idaho

(CNN) — The two presidential front-runners are both eyeing Super Tuesday 2 as a chance to build on their momentum and pad their leads as they look to put the races away by the end of the month.

Hillary Clinton will try to set the tone for the entire Great Lakes region by holding off Bernie Sanders in Michigan, and she is expected to claim another Southern victory in Mississippi.

And Donald Trump will try to run the table, with four Republican contests on tap. He leads in Michigan, and has done well in Southern states like Mississippi. Idaho and Hawaii vote Tuesday as well, a chance to pick up more delegates.

Here’s what to watch in the day’s elections:

Can Trump break away?

Time is running out for Trump’s opponents to turn things around before the winner-takes-all states start to vote and the GOP front-runner racks up enough delegates to lock the nomination up before the convention.

Trump and Texas Sen. Ted Cruz have broken away from Florida Sen. Marco Rubio in the delegate count — and Tuesday should help them build on their advantage.

Delegate math: Rubio, Kasich wins key to stopping Trump

Trump leads the polls in Michigan, the crown jewel of Tuesday’s contests.

Mississippi, meanwhile, will test whether Cruz’s surge in Louisiana — he closed a massive polling gap and finished within four points on Saturday — expands to other Southern states, or Trump can finish running the table in the Deep South. Idaho could be better ground for Cruz, who has spent more time in the state than other candidates.

All three states, though, pose problems for Rubio.

Mississippi and Michigan each require candidates to reach 15% to accumulate delegates. Idaho requires candidates to top 20%. The stronger Trump and Cruz run, the tougher it becomes for Rubio to make any gains at all.

Florida newspaper won’t endorse any GOP candidate

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