Do running mates matter?
Presumptive Democratic presidential candidate Kamala Harris picks Minnesota Gov. Tim Walz to be her vice president. Who is he and why did he make the cut?
We'll also discuss Ohio Sen. JD Vance, Donald Trump's vice presidential nominee, who has struggled on the campaign trail since being announced as Trump's running mate.
Guests:
- Annie Linskey, White House reporter,
- Christopher Devine,
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