Vice President Kamala Harris and Democratic Gov. Gretchen Whitmer of Michigan went to a bar Saturday after a campaign event and appeared to begin talking about the presidential race when the pair realized press microphones could pick up their conversation. Whitmer and Harris greeted locals at the bar before they sat to drink a beer and talk while patrons began watching and filming them on smartphones. The video, captured by C-SPAN, shows Whitmer offering to buy the vice president a beer, and Harris telling the bartender she’d have what Whitmer was having, after which the two began cackling. RE…