How tight is Gov. Andrew Cuomo's grip on the New York state Democratic party?
Consider the opening of its May convention, when a pair of bishops delivered the invocation.
"Governor Cuomo has been called since his mother's womb," they said. "His family was chosen so that they may be able to lead us."
On Thursday, Democratic primary voters in New York will decide whether to choose him for a third term in office, matching his father, the late Gov. Mario Cuomo.
In the other corner stands Cynthia...