Venn’s been working on this for years. With the convention drawing close, his pace accelerates. Late nights. Early mornings. Lost sleep. Mid-day coffee. In the earliest fraction of morning light, his wife leans against the kitchen counter, sipping the day’s first mug of coffee. “Are you ready, darling?” The lip of the cup reaches her mouth. A shy smile of shared giddiness opens toward him. “Of course, Lil,” he says, drinking his orange juice. “Never so much as now.” He sets the juice cup on the counter. “Does this tie go with my suit?” “Does anything not go with gray,…