The desire and ability to compromise--to work with various contradictory interests--in order to get actual legislation through. ( No more "my way or the highway".) Obama has shown the desire to do so. Interestingly enough, so has Nancy Pelosi. Hillary--not so much--as indicated in her refusal to take advice while trying to get health care reform in the 1990's--and her current insistence that all citizens would have to buy health insurance--or have their wages garnisheed--which would never fly in Congress.

And as has been already indicated earlier in the thread, perhaps the greatest attribute of a president is the power to persuade. The president would obviously have strong principles and great aims. But the power of "mere words"--especially the ability to inspire-- is actually substantial--in fact essential in order to achieve the "deeds" we've heard so much about from Hillary.