Watch live: Tim Walz holds campaign rally in key battleground state

Minnesota Gov. Tim Walz was to hold a campaign rally in a key battleground state Thursday.

The Democratic vice presidential nominee was in Erie, Pennsylvania, to stump for Vice President Kamala Harris.

The speech comes as Harris prepares in the state for her upcoming debate with Donald Trump, and comes after Walz held a Labor Day rally in a fellow "Blue Wall" state: Milwaukee, Wisconsin.

Watch the rally below or at this link.