I know there are several readers out there who have made pretty firm choices in who they want for president. At least they've made firm choices on who they want to win the Democratic nomination. I offer this challenge.
In comments below, in a few short sentences, lay out why you believe a) Barack Obama, b) Hillary Clinton, or c) John McCain would make a good president.
Not the best president, maybe not even the best choice of the three - I would just like to see what people think are the primary reasons or indications they've seen that the candidate they support has the qualifications, potential and vision to be the President of the United States.
One major rule. No rebuttals. You don't get to argue against a previous commenter's reasonings. I want to hear your personal opinions on why you feel your candidate will make a good president.