Kamala Harris introduces running mate Tim Walz at raucous Philadelphia rally

Democratic nominee calls Walz the kind of vice-president America deserves' as pair vow to take fight to Donald Trump

Kamala Harris introduced her running mate Tim Walz as the kind of vice-president America deserves" at a raucous rally in Philadelphia that showcased Democratic unity and enthusiasm for the party's presidential ticket ahead of the November election.

Casting their campaign as a fight for the future", Harris and Walz were repeatedly interrupted by applause and cheering as they addressed thousands of battleground-state voters wearing bracelets that twinkled red, white and blue at Temple University's Liacouras Center - a crowd Harris's team said was its largest to date.