The "Super Tuesday" contests showed Clinton reclaiming her mojo against Bernie Sanders. It was a big night for Donald Trump, too, but what will the establishment do about it? Here are four lessons learned from the events of" Super Tuesday." TRUMP MAY BE UNSTOPPABLE
The billionaire businessman at the center of the Republican race cleaned up Tuesday night, winning seven of the 11 states at stake for his party, including the key swing state of Virginia.
"It's awfully close to inevitable" for Trump winning the nomination, said professor Dante Scala at the University of New Hampshire.
The longer the race goes, the more difficult it will be to oust Trump. If he obtains 1,237 out of the total 2,472 delegates, he clinches the nomination.
RUBIO FAILS TO SHINE
Republican leaders may have thrown their weight behind Senator Marco Rubio as the antidote to Trump, but Tuesday's results confirmed what millions of voters felt in their gut: it was too little, too late.
After spending the past week brutally attacking Trump, scooping up major endorsements, and presenting his case as the mainstream candidate, Rubio finished a disappointing third-place on the night, behind Trump and Cruz.
The last state to report its voting results, Alaska way out west, went to Cruz, for his third win of the day. Many have laid the debacle at the foot of the Grand Old Party.
BLOCKING THE DONALD
The Republican Party has been scrambling to prevent a Trump nomination, but nothing has worked. Now it's crunch time.
Some Republicans, notably Senator Ben Sasse, have suggested either a third party or independent run against Trump. Others point to party operatives potentially altering the rules of the convention in order to prevent a Trump takeover.
"There's a danger here. If Republicans go after him, they're destroying their own nomination," strategist Frank Luntz told CBS.
CLINTON REGAINS PRE-EMINENCE
"By the end of tonight, we are going to win many hundreds of delegates," Senator Bernie Sanders told his supporters, noting there were still another 35 states to vote after Super Tuesday.
Even though he won four states Tuesday, the message from Sanders, who has based his campaign on ending economic inequality, fell flat among a crucial Democratic bloc: minority voters.
More than 80 percent of African-Americans voted for Hillary in southern states, exit polls showed. And in Texas, two-thirds of Hispanic Democrats voted for her.
Clinton also handily won among women, who represent more than half of the Democratic electorate. Altogether, Clinton has won 11 of the 16 primary races to date and holds a substantial delegate lead.