As midterms approach, does GOP have a Trump problem?

The US midterm elections are just five weeks away - and while the US President is not on the ballot, his influence is top of mind for Republicans. Donald Trump's approval ratings have been hitting record lows in recent weeks, and in a sign of the party's concern it has started pouring campaign funding into many seats once considered safe, and some candidates have even changed their tune on one of the election's biggest issues: The US's war in Iran.