Wed, 08/07/2024 - 06:35 Tech Insider Politics Gov. Tim Walz of Minnesota appeared at a rally with Vice President Kamala Harris in Pennsylvania on Tuesday, hours after being announced as her running mate.Andrew Harnik/Getty Images Tags politics, harris-walz, tim-walz, kamala-harris, 2024-election, news-uk Source Harris picked Walz partly because he said he had no presidential ambition, memb…