At 8 p.m. EST on the dot, when polls closed, NBC News and the Associated Press already called the state of Mississippi for Democratic candidate Hillary Clinton.
The GOP race is too close to call, with businessman Donald Trump in the lead.
UPDATE 1 (7:29 p.m.): Trump has been called as the winner of the Mississippi primary, with 57 percent of the vote. U.S. Sen. Tex Cruz (R-TX) has pulled in 36 percent with 1 percent of precincts reporting. Ohio Gov. John Kasich and neurosurgeon Ben Carson come in tied for third thus far with 2 percent of the vote. In what is being seen as blow to the senator, U.S. Sen. Marco Rubio (R-FL) is trailing Carson, who is no longer in the race, in the state.
UPDATE 2 (8:20 p.m.): With 22 percent of precincts reporting, Trump has been called as the winner of the Michigan primary, with 38 percent. Kasich is in second place with 26 percent of the vote, Cruz comes in third with 22 percent and Rubio is rounding out the race with 8 percent of the vote.
UPDATE 3 (8:55 p.m.): The race between Clinton and Sanders is too close to call in Michigan with 51 percent of precincts reporting. Going into the election, Clinton was leading Sanders by double digits in recent polls.
UPDATE 4 (10:40 p.m.): Sanders has lodged a huge upset by winning the Michigan primary despite expectations of a loss. Sanders and Clinton are set to debate tomorrow at 8 p.m. on CNN. Sanders, with more than 50 percent of the vote, is ahead by more than 22,000 votes with 96 percent of precincts reporting. Clinton currently has 48 percent of the vote.
UPDATE 5 (10:56 p.m.): Cruz wins Idaho, with 41 percent of the vote. Trump is coming in second place with 29 percent of the vote and Rubio is currently in third place with 18 percent. Trump currently has 430 delegates, while Cruz has 336. Rubio comes in third with 154 delegates and Kasich has 51. In order to get the GOP nomination, 1,237 delegates need to be secured.
UPDATE 6 (2:42 a.m.): Trump has won the Hawaii caucuses, with 43 percent of the vote. With 97 percent of precincts reporting, Cruz came in second with 33 percent of the vote, Rubio has 13 percent and Kasich pulls up the rear with 11 percent.
Overall, by CNN's count, Trump picked up 72 delegates on Tuesday, while Cruz gained 57 and Kasich received 17 delegates. Rubio failed to pick up any delegates, according to the CNN estimate.
That's it for us tonight as we put another day of primary elections and caucuses to rest.