The senators came out victorious for their respective parties on Sunday, a day during which two nominating contests were held. Vermont Sen. Bernie Sanders won the Democratic caucuses in Maine, and Florida Sen. Marco Rubio won Puerto Rico's primary.

With 91.1 percent of precincts reporting, Sanders has 64.3 percent of the vote to former Secretary of State Hillary Clinton's 35.5 percent. He has almost 1,000 more votes than she does — 2,231 to 1,232.

It is not surprising Sanders won Maine because of its proximity to his home state and its white population. As of 2014, the state was 95 percent white, according to the U.S. Census Bureau. Sanders has done well in states where the white population makes up a large percentage. He has also done well in caucus states.

Florida Sen. Marco Rubio won Puerto Rico on Sunday. (Michael Vadon/Flickr courtesy of Creative Commons)
Florida Sen. Marco Rubio won Puerto Rico on Sunday. (Michael Vadon/Flickr courtesy of Creative Commons)

The victory gives Sanders a three state sweep — in terms of geography — Vermont, New Hampshire and Maine. It also gives him the W for the weekend because he won three states to Clinton's one.

Rubio won the Puerto Rico primary, with 73.8 percent of the vote. The territory gave him 27,485 votes, which put him ahead of second place finisher Donald Trump by more than 20,000 votes in the contest. The senator won all of the island's 23 delegates because, although proportional, Puerto Rico's rules award all delegates to a candidate if the candidate exceeds 50 percent of the overall vote. Puerto Ricans cannot vote in November.

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