WASHINGTON – Kamala Harris will name her running mate as soon as Monday, as she prepares for a tour of US battleground states aimed at turning excitement over her presidential bid into durable support that can power her to victory.All paths to the White House run through a handful of swing states, and Harris will kick off her five-day run Tuesday in the largest — Pennsylvania — as she builds momentum for her showdown with Republican Donald Trump on November 5.”At this moment, we face a choice between two visions for our nation: one focused on the future and the other on the past……