In the United States, the latest round of presidential primary elections in the Republican Party has been good news for candidates both Donald Trump and John Kasich, but it has spelled the end for Marco Rubio.
A big loss has prompted Mr Rubio to drop his White House bid after being beaten by Mr Trump in his home state of Florida.
Meanwhile for the Democrats Hillary Clinton has won Florida, Illinois, North Carolina and Ohio.
United States Republican presidential front-runner Donald Trump won the crucial contest in Florida, knocking rival Marco Rubio out of the race.
But Mr Trump lost Ohio to John Kasich, leaving Mr Kasich as the last establishment Republican candidate standing.
Mr Trump had hoped a sweep of five states would put him on the path to the party nomination, but he now faces a three-way struggle with Mr Kasich and Ted Cruz that could lead to a showdown at the Republicans' convention in July.
After annoucing he was suspending his campaign, Mr Rubio congratulated Mr Trump -- but gave strong words to his supporters.
"I just want you to know there's nothing more you could have done, you worked as hard as anyone work, I want you to know we worked as hard as we ever could. Well America is in the middle of a real political storm, a real tsunami and we should have seen this coming. Look people are angry and people are frustrated.
Mr Kasich's win in Ohio gives new hope to those Republicans determined to deny Mr Trump the party's presidential nomination and block him from capturing the 1,237 delegates needed to win.
Mr Kasich says he's the best alternative to Mr Trump in the Republican Party.
"I want you to know that the campaign goes on, and I also want you to know that it's been my intention to make you proud. And I want to remind you again tonight, that I will not take the low road to the highest office in the land."
Mr Trump congratulated Mr Rubio on his campaign, but did not mention Mr Kasich or Mr Cruz.
He remained optimistic of his chances in the race - saying a win for the Republicans was a win for America.
"I just want to say we're going to go forward and we're going to win. But more importantly we're going to win for the country. We're going to win, win, win, and we're not stopping."
On the Democrats' side, former Secretary of State Hillary Clinton, saw victory in the states olf Illinois, Florida, Ohio and North Carolina -- putting more distance between herself and rival Bernie Sanders.
The wins for Mrs Clinton added to her lead in pledged delegates, and appears to give her an almost insurmountable edge over Mr Sanders.
It's also burying the memory of her loss in Michigan last week.
Speaking to supporters in Florida Mrs Clinton took the opportunity to take a swipe at her Republican rival.
"When we hear a candidate for president call for rounding up twelve million immigrants, banning all Muslims from entering the United States, when he embraces torture, that doesn't make him strong, it makes him wrong."
Hillary Clinton's primary victories have dealt a severe blow to Bernie Sanders' bid to slow her march toward the Democratic presidential nomination.
Despite Mrs Clinton's advance Mr Sanders told supporters in Phoenix, Arizona that his campaign has come a long way.
"We started this campaign at three percent in the national polls. We have come a long way in ten months, and the reason that we have done as well as we have, the reason that we have defied all expectations, is that we are doing something very radical in American politics, we are telling the truth."
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