The political reality is that the next presidency will be either an Obama 2nd term or a Romney first term. I am not happy with the the options but I intend to do whatever I can within the law to see to it that a second Obama term does not happen. I personally find Romney no more objectionable than I did McCain whom I despised but voter for anyway.
I understand your viewpoint.
I find Romney worse than Juan.
I also don’t want a rhino leading congress into liberal sins.
Since the conventions have not been held and no one has been nominated, you or anyone else for that matter has any idea who the candidates will be.
We can speculate and ponder, maybe even with some degree of accuracy but we do not know for certain.
Given that some dem governors and other high officials have publicly said they will not attend the dem convention, it isn't guaranteed that BHO will be nominated and since the Republican candidates have not turned their delegates over to Romney, with many suing to become uncommitted so they don't have to support Romney, and about a third total which are uncommitted appear not to be supporting Romney - really you are only guessing like everyone else.
After the convention, then you can be sure.