So prepare your favorite armchair, your drink and your snack. If you have an advantage of watching the campaign from the outside, double the quantities. Here come a few examples where the gloves come off:
Obama is under the mistaken impression that America's symbol is the bald ego.
From here via Soccer Dad.
Surely the best one:
And one a bit below the belt:
To be fair and balanced, I promise to collect a few from the other side.