Kamala Harris has chosen Tim Walz as her running mate. 

The 60-year-old Governor of Minnesota has already gone viral for calling Donald Trump ‘weird’, but will he secure Harris victory in November’s US election? 

Today, political scientist Andra Gillespie on why Harris picked the former school teacher and the swing voters that might be tempted to back the pair. 

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Andra Gillespie, associate professor of political science at Emory University