Republicans face prospect of ‘civil war’ as Trump’s air of invincibility starts to fade

In the weeks leading up to the midterm elections, US President Donald Trump displayed unwavering confidence in his star power, urging supporters to close their eyes and “pretend I’m on the ballot”.But Tuesday night’s disastrous results for the Republicans – the first time in 20 years both houses of Congress have changed hands at the same time – have punctured the aura of invincibility that once shielded Trump and allowed him to keep potential critics in line with the threat that opposing him could end their careers.According to analysts tracking the post-election fallout, the Republican Party is increasingly at risk of a power struggle between Trump’s supporters and more traditional establishment figures.