WASHINGTON (AP) — Democrats have unified with remarkable speed behind Vice President Kamala Harris as she has taken over the top of the party’s ticket heading into the November presidential election. It may be another story when it comes to a running mate. Sources are saying that Harris has narrowed the field for her choice for a vice presidential running mate to two men, Pennsylvania Governor Josh Shapiro and Minnesota Governor Tim Walz. An announcement is expected before a rally Tuesday evening in Philadelphia.