Trump-backed Republicans lose dozens of US midterm races, raising questions over his influence

Guardian analysis shows how tumbling approval ratings may have hurt candidates backed by US president

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Dozens of Republican candidates directly endorsed by Donald Trump lost their US midterm election races, according to analysis by the Guardian, raising questions over the power of the president's support.

In past elections, Trump's endorsements have been coveted. In the final stages of this year's campaign, he actively urged voters to act as though he were on the ballot.