I'll bet that was rhetorical.
You can't really oppose Obama's reelection if you may also oppose the republican's election.
I can and I will if the Pubbie is Mitt Romney.
How exactly will you "oppose" Obama's re-election? What will you do that will stop his re-election? Tell us all your plan that will not leave us with 4 more years of Obama? I'm really curious to hear it.
You have every right to oppose Romney, and to vote against him, and to tell others to not support him. But I don't see how you are also doing something to oppose Obama's re-election, if Romney is the Republican nominee. Because you have to choose -- either you will stop Romney from winning, or you will stop Obama from winning. There's no chance of getting a 3rd-party elected.