Trump-a-palooza: why are Republicans avoiding the president’s convention?

Donald Trump has thrown a convention to amp up the Republican base ahead of the midterm elections, but not everyone is thrilled about it. Dozens of officials running for re-election have stayed away, choosing instead to campaign locally. Are they worried about Trump’s current unpopularity weighing down their ticket?
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This week Jenna Amatulli is in for Jonathan Freedland and speaks to Guardian US politics correspondent Rachel Leingang