Kamala Harris introduces Tim Walz as running mate at raucous Philadelphia rally

In choosing the 60-year-old Mr Walz, Ms Harris is elevating a Midwestern governor, military veteran and union supporter

Kamala Harris and Tim Walz arrive for a campaign rally (AP Photo/Joe Lamberti)

Kamala Harris has introduced Minnesota governor Tim Walz as her running mate, turning to an affable longtime politician who Democrats hope can keep newfound party unity alive in a presidential campaign heading towards Election Day.

The two made their first public appearance at a rally in Philadelphia just hours after Ms Harris announced her vice presidential pick to take on the Republican ticket of former president Donald Trump and Ohio senator JD Vance.