It's undoubtedly coincidence that Cats arrives on cats' feet just after the national political conventions have concluded. Patrons seeing it this week and in the weeks to come may find themselves reminded of those congregations. Truth to tell, they're more likely to see the Democrat Convention echoed rather than the Republican Convention. The diversity of the former outshines the divisiveness of the latter-the many unison dance routines being a visual metaphor for cohesion and promise. And it may be that when Grizabella, a woman, is selected to rise to new heights, more than a few spectators will flash on the Democrat's 2016 nominee ascending to her next vaunted level.