They CAN, but they WON'T.
This election is going to be decided in the middle. And of these three candidates, the only one who can be said to be in the middle is McCain.
Obama is so far left he is coming around on the right. Hillary is just unlikeable. She grinds on people. Her voice is like that of some ugly old school marm or an angry Mother-in-Law. Men will not vote for her. Men will crawl over miles of broken glass just to make sure they will never hear that grinding holier than thou vioce of hers again.
Hell, I can't stand McCain, but I suspect that by November, I'll be ready to "pay any price, bear any burden, meet any hardship, support any friend, oppose any foe, in order to assure" that Hillary Clinton never takes the Oath of Office for the Presidency of the United States.
Well I respect to the death your right to vote for the glorious bundle of joy, and loyal to the death fellow, known as John McCain.
I simply will not pull the lever for this man but I’ll not pull for Hillary or Obama either.
I will vote down ticket and I will not accept any insults over my agonizing decision.
If John McCain can vote against his party constantly and be called a Maverick and other terms of endearment....
...WHY CAN’T I?