Her dominance helped calm fears within the Democratic Party that mushroomed after her surprise defeat in Michigan last week. Clinton extended her lead over Sanders in pledged delegates beyond 300. Counting her wide edge among unpledged "super delegates," she now has roughly two-thirds of the total needed to secure the Democratic nomination.
Her victories entrenched her existing support, since those super delegates can switch support at will. Sanders needs to shake their confidence in Clinton's viability, but he failed to do so Tuesday.
Trump scored a huge victory in Florida, the biggest state voting Tuesday. That allowed him to grab the state's 99 delegates which, on the Republican side, are awarded on a winner-take-all basis. It also knocked Florida Sen.Marco Rubio, once considered his most formidable Republican rival, out of the race. Trump also grabbed 24 delegates in Illinois by winning there.