A conservative thinks that they are supporting that solid citizen Bruce Wayne for Mayor of Gotham City, against the vicious and anarchic rabble of the Joker.
A liberal thinks that the little guy will be ground under the plutocratic oppression of the Penguin and his mob, unless they can carry incorruptible man-of-the-people Batman to City Hall.
But I think we are marking time to the old nursery rhyme:
There was a man of Gotham Town,
And he was wondrous wise:
He jumped into a gooseberry bush
And scratched out both his eyes...
and that the liberal is really voting for Batman against the plutocratic oppression of Bruce Wayne, while the conservative is voting for Bruce Wayne against the violent populism of the Batman.
In the nursery at least, the sequel is a happy one:
...And when he found his eyes were out,
With all his might and main,
He jumped into another bush
And scratched them in again!
This is my attempt for the day at finding the better bush. SOCK! BIFF! KAPOW!