Bernie Sanders gets grumpy, but voters like him that way

Bernie Sanders doesn’t kiss babies. He promises them a revolution. “This is for you,” the upstart Democratic presidential candidate told 3-month-old Lily Landretti after an event in southeastern Iowa. He meant his insurgent campaign. Lily just kept gurgling. In an age of carefully planned campaigns, the Vermont senator is different. A self-identified grump, Sanders gets angry, rolls up his sleeves and winds up drenched in sweat. Like Donald Trump in the Republican race, Sanders has been drawing big crowds and…