UPDATE 9:55 p.m.

Donald Trump completed a five-state sweep in Tuesday’s Republican presidential primaries, strengthening his shot at avoiding a contested convention – while Hillary Clinton scored convincing victories but was denied the same bragging rights of a primary sweep by a surprise Bernie Sanders win in Rhode Island.

Of the two frontrunners, Clinton – who won four states Tuesday – remains closer to clinching the nomination. She now has nearly 90 percent of the delegates needed to secure the party nod, even as Sanders vows to keep fighting.

When the dust settled on Tuesday’s contests, Trump was declared the winner in Maryland, Pennsylvania, Connecticut, Delaware and Rhode Island, on the heels of his victory in New York state a week ago. His dominant showing in the Northeast gives him significant momentum heading into next week’s primary in Indiana. And he’s on track to win over 50 percent of the vote in Tuesday’s contests, a feat he has only achieved once before, in New York.

Meanwhile, John Kasich was shaping up as the second pick of Northeast Republicans so far, projected to place second in Connecticut, Rhode Island and Delaware – leaving Cruz to finish third.

Clinton, meanwhile, was the projected winner in Connecticut, Maryland, Pennsylvania and Delaware – while Sanders won Rhode Island.

Stay tuned to Fox News Channel for continuing coverage.

8:38 p.m.

Fox News projected that Donald Trump will win Delaware, completing his sweep of all five states holding primaries today.

Trump's clean sweep tonight comes on the heels of his victory in New York last week and gives him significant momentum heading into next week's primary in Indiana.

On the Democrat side, Hillary Clinton is the projected winner of Pennsylvania, Delaware and Maryland so far tonight.

8:26 p.m.

Fox News can now project Donald Trump will win Rhode Island's Republican primary, based on early vote tallies.

8:03 p.m.

Polls have closed in the five states holding primaries today, and Fox News is projecting Donald Trump will win at least Maryland, Pennsylvania and Connecticut on the Republican side.

Trump is on track to win north of 50 percent in each of those states. 

On the Democratic side, Fox can also project that Hillary Clinton will beat Bernie Sanders in Maryland. Clinton is also leading in Pennsylvania, although exit polls show it's too early to project a winner in that state or in Connecticut.

There are no exit polls in Delaware or Rhode Island, so a winner will not be declared until actual vote counts start to come in.

Stay tuned to Fox News Channel for all the latest updates.

Fox News shared some early exit poll data from today's East Coast primaries.

Republican voters who chose their candidate in the past week are leaning towards John Kasich.

Cruz and Kasich voters are much more likely to say that their vote was placed against another candidate. But almost all of the Trump supporters say that they placed their vote in favor of their candidate.

About one in four Republicans say they would not vote for Trump if he ends being the nominee.

Most Republicans believe that if nobody hits 1,237 delegates, the party should nominate the candidate who has the most votes in the primary.

Watch more analysis in the video above, and stay tuned to Fox News Channel for updates.