Alexander the Great cut the Gordian Knot. He didn't try to untie it. Therefore:

(1)Select the person who (in the Presidential nominee's view) would make the best President.
 
When distracted from that purpose by the inevitable TV air-filling chatter of "experts",  intent mostly on showing us how clever THEY are:

(2)See #1 above.

 The last FOUR winning tickets avoided about 90% of the Chris Matthews-style kingmaker overload, and simply put a 3-wood in the center of the fairway with a solid complimentary choice. It's the LOSERS who invariably over-think it and strain for some kind of  phony"balance", or try (invariably forlornly) to steal a state.

Whatever you do, it's possible to either win or lose. Do either with your best game.