I haven't decided yet. Obama has a few pluses and several big dings against him in my book. I am still deciding about Romney. I don't know enough about him and his biggest dent is the social conservative thing.
For me, the biggest issues:
Obama's economy record and tactics leave a sour taste for me, but he might steal my vote if he gets serious about SSM.
Romney needs to impress me and show me that he won't actually take things backward with equal rights.