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US election 2016: Marco Rubio wins big in Puerto Rico US election 2016: Sanders beats Clinton in Maine caucusus
(35 minutes later)
Marco Rubio has won the latest contest in the battle to be the Republican presidential candidate, a day after being urged to quit the race. Bernie Sanders has beaten Hillary Clinton in the Maine caucuses, the latest contest in the battle to be the Democratic presidential candidate.
With more than a half of votes counted, Mr Rubio has more than 70% of the vote in Puerto Rico. With 80% of the vote counted, Vermont Senator Mr Sanders is polling 64%, while former Secretary of State Mrs Clinton has 36%.
Despite his second victory in the state-by-state contest, Mr Rubio still trails Donald Trump and Ted Cruz. In the Republican race, Marco Rubio easily won Puerto Rico's primary, beating billionaire Donald Trump.
In the Democratic race, Bernie Sanders has beaten Hillary Clinton in the Maine caucuses. Mrs Clinton and Mr Trump remain overall leaders in the nomination campaigns.
With nearly 80% of the vote counted, Vermont Senator Mr Sanders is polling 64%, while former Secretary of State Mrs Clinton has 36%, according to an Associated Press count. Sunday night saw Mrs Clinton and Mr Sanders clash in a CNN-hosted debate in Flint, Michigan.
The two candidates are currently taking part in a debate in Flint, Michigan. In Saturday's round of voting, Mr Sanders took two states - Kansas and Nebraska - but Mrs Clinton maintained her Democratic front-runner status after a big victory in Louisiana.
Results as they come in
Clinton v Sanders: The progressive battle
Trump and Cruz seek "one-on-one" battleTrump and Cruz seek "one-on-one" battle
How radical are Trump and Cruz?How radical are Trump and Cruz?
Clinton v Sanders: The progressive battle
Results as they come in
'One on one' call'One on one' call
While the win in Puerto Rico - a US territory - will boost Mr Rubio's campaign, it sends just 23 delegates to the Republican convention which nominates a presidential candidate. While the win in Puerto Rico - a US territory - will boost Florida Senator Mr Rubio's campaign, it sends just 23 delegates to the Republican convention which nominates a presidential candidate.
Republican hopefuls need the votes of 1,237 delegates to get the nod for the presidential race proper.Republican hopefuls need the votes of 1,237 delegates to get the nod for the presidential race proper.
Mr Rubio still trails Donald Trump and Texas Senator Ted Cruz.
Speaking after wins in the Republican Kentucky caucuses and Louisiana primary election on Saturday, Mr Trump told a news conference: "I would love to take on Ted Cruz one on one."Speaking after wins in the Republican Kentucky caucuses and Louisiana primary election on Saturday, Mr Trump told a news conference: "I would love to take on Ted Cruz one on one."
"Marco Rubio had a very very bad night and personally I call for him to drop out of the race. I think it's time now that he dropped out of the race. I really think so.""Marco Rubio had a very very bad night and personally I call for him to drop out of the race. I think it's time now that he dropped out of the race. I really think so."
Meanwhile, Texas Senator Mr Cruz - who won Republican caucuses in Kansas and Maine - said he believed that "as long as the field remains divided, it gives Donald an advantage".Meanwhile, Texas Senator Mr Cruz - who won Republican caucuses in Kansas and Maine - said he believed that "as long as the field remains divided, it gives Donald an advantage".
Races at a glance:
Election calendar: Next racesElection calendar: Next races
The full primary calendarThe full primary calendar