This sums it up rather nicely.

“In my opinion, the choice could not be more clear: between one candidate, John McCain, who’s had experience, been tested in war and tried in peace, another candidate who has not,’’ [Senator Joe] Lieberman said. “Between one candidate, John McCain, who has always put the country first, worked across party lines to get things done, and one candidate who has not. Between one candidate who’s a talker, and the other candidate who’s the leader America needs as our next president.”

Let's face it -- we are given a choice between a man of substance and one who is light on experience. We get to choose between one known for his bipartisanship, and one who won't even back his nation's president and troops when they have been successful because doing so would undercut his ideology. For those who truly put their country first, there should be no question of the better candidate.