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Primary elections 2016 results: a big night for Donald Trump

Libby Nelson is Vox's policy editor, leading coverage of how government action and inaction shape American life. Libby has more than a decade of policy journalism experience, including at Inside Higher Ed and Politico. She joined Vox in 2014.

Donald Trump swept primaries in five states in the Northeast and mid-Atlantic on Tuesday night, with Hillary Clinton close behind with four victories of her own. It was a night that solidified the position of both presidential frontrunners, although none of their rivals were ready to concede the race.

Trump won all five states: Delaware, Pennsylvania, Maryland, Rhode Island, and Connecticut.

Clinton won four states: Connecticut, Delaware, Maryland, and Pennsylvania.

Bernie Sanders won one state: Rhode Island.

The results were long-anticipated: Trump has polled well in Northeastern and mid-Atlantic states for months. And Clinton matched her strong showing into the polls heading into Super Tuesday as well, although Sanders's victory in Rhode Island stopped her from getting a sweep of her own.

Here's a quick guide to the results so far:

Connecticut: Trump wins, Democrats not yet called

Republican delegates at stake: 28 (15 awarded by congressional district and 13 awarded statewide)

Democratic delegates at stake: 55, awarded proportionally, as always

The polls predict: Clinton wins. Clinton's lead over Sanders is in the single digits, but three polls taken in the past three weeks have all found her to be in the lead.

Delaware: Trump wins, Clinton wins

Republican delegates at stake: 16 (winner take all)

Democratic delegates at stake: 21

Maryland: Clinton wins, Trump wins

Republican delegates at stake: 38 (24 by congressional district and 14 statewide)

Democratic delegates at stake: 95

If you're looking for some excitement in a night with little presidential drama, Maryland also has a Senate primary underway, where two members of Congress — Chris Van Hollen and Donna Edwards — are squaring off to fill retiring Sen. Barbara Mikulski's open seat. Because Maryland leans so heavily Democratic, the primary is pretty much the election in this case.

Pennsylvania: Trump wins, Clinton wins

Republican delegates at stake: 71 (Pennsylvania, though, has unique delegate rules: Only 17 are allocated to the primary's winner, and they're winner take all. The remaining 54 delegates aren't bound to vote for any candidate.)

Democratic delegates at stake: 189

While you're keeping your eye on the state, Pennsylvania also has a fairly interesting Senate primary between Joe Sestak and Katie McGinty: Sestak was the candidate in 2010, but the big Democratic money is backing McGinty this time around.

Rhode Island: Trump wins, Sanders wins

Republican delegates at stake: 19 (awarded proportionally)

Democratic delegates at stake: 24