COLUMBUS, Ohio — Tuesday's Democratic primary debate in Westerville already is assured of making history. The 12-candidate field is the largest televised presidential debate ever, topping the 11 Republicans gathered four years ago in the Reagan Presidential Library. And the three-hour match-up starting at 8 p.m. will become the first held under the shadow of a presidential impeachment inquiry, which the Democratic dozen all support. Analysts say those unprecedented dynamics generate several key questions about how the debate will go down: • Will the rivals of front-runner Joe Biden be able to attack him for the ethically dubious scenario of his son being hired as an executive with Ukrainian energy company Burisma while Biden was vice president and point man on Ukraine, without giving aid and comfort to President Donald Trump? • Will any of the other 11 Democrats bring up health issues of Bernie Sanders, last quarter ...
