Republicans are warned of 'earthquake' poll findings on the eve of the US midterms as party insiders turn on Trump

Internal polling data has rattled Republican strategists on the eve of Tuesday's midterm elections, with findings described as potentially seismic for the party. GOP insiders are privately blaming President Trump for expected losses, with one saying: 'We all know who the problem is.'

The 'earthquake' warning came hours before polls open, giving Republicans no time to course-correct.

Party insiders are reportedly bracing for a 'drubbing' they attribute directly to Trump's drag on candidates.