Vice President Kamala Harris has selected Minnesota Gov. Tim Walz as her running mate, capping the Midwestern Democrat’s short but swift ascent from a relative unknown to a leading driver of the party’s attacks on Donald Trump and the MAGA agenda.

Vice President Kamala Harris has made a decision on her running mate, with four people close to the process saying Gov. Tim Walz of Minnesota is her choice.
The selection caps the Midwestern Democra…