Vice President Kamala Harris will set out this week on a swing-state campaign blitz, giving her a far heavier travel schedule than her opponent, former President Donald Trump. It will be a critical week for Harris, who is rushing to introduce herself to voters with just three months until Election Day. It will also be the first time she will appear with her yet-to-be-announced running mate. Starting Tuesday, Harris will campaign across seven swing states over five days, one of the heaviest weeks of campaign-related travel in the general election.Her team has vetted six contenders to be her running mate: Kentucky Gov. Andy Beshear, Transportation Secretary Pete Buttigieg, Sen. Mark Kelly of Arizona, Illinois Gov. JB Pritzker, Pennsylvania Gov. Josh Shapiro and Minnesota Gov. Tim Walz.Walz, Shapiro and Kelly each met separately with Harris on Sunday, according to a source familiar with the meetings.Harris is set to appear alongside her running mate for the first time Tuesday in Philadelp...