Sabrina Siddiqui, The Guardian

As Clinton has all but locked up the Democratic presidential nomination, many are starting to wonder what the general election ticket might look like

Mounting a stage at a public park in downtown Dallas, Marco Rubio pulled out his phone before a crowd of more than 3,000 and began reading from Donald Trump’s Twitter account.

While Marco Rubio took the stage inside a barn flanked by two South Carolina lawmakers who like him were once seen as the future of the Republican party, two hours south-east in North Charleston Jeb Bush focused on the past, with his brother George W Bush joining him for the first time on the campaign trail.

Vowing to defend the second amendment , Republican presidential candidate Marco Rubio suggested to a packed audience in Iowa that guns might be the only tools at their disposal to protect themselves against the Islamic State.

With Ted Cruz emerging as a threat in Donald Trump’s path to the Republican presidential nomination, the real estate mogul has looked to blunt Cruz’s momentum by questioning his eligibility to run for president because he was not born in the United States.