Knock, knock. Who’s there? A volunteer, with a stack of blue ballot guides ready to have a conversation and hoping that you’re not going to pretend you’re not home. That volunteer could be you. Door knocking is not the easiest way to participate in politics. It is far less comfortable than posting online or putting a yard sign in your front lawn. It asks you to walk up a stranger’s driveway, ring the bell and start a conversation. Sometimes the door opens. Sometimes it doesn’