You vote for Giuliani, you put your imprimatur on his actions in office and take responsibility for them.
Not me. 
It is curious that no one has challenged his historical analysis.
No competition makes for arrogance, which, in politics, is expressed by candidates in monopoly parties as just doing what they want knowing constituents have no choice.
At least Rudy has changed his tune regarding the appointment of originalist judges and the Second Amendment. Do I believe him? Not necessarily, but I'm willing to give him the benefit of the doubt in the unlikely event that he wins the nomination.
Should all the folks I have heard say they'll hold their nose and vote voted for a third party, that would clean up the arrogance fast.
Do you want another Clinton administration at this point in world affairs?
Win? Lose? The election of national leaders is not a football game. You can "feel good" that "my team won", until "my team" stays on the same repressive path.
If you think that there's no difference between the two major parties, then I'm at a loss for words. The RINOs are still a minority in the GOP.
And if you vote for one of those disguised liberals, because he can win, instead of voting for a true conservative when it looks like he can't, you betray your franchise.
I never bought that argument. He sang a liberal tune in order to have a chance given the uniqueness of NYC politics. Now, he's at least singing a conservative tune now. He's a politician. What else is new? I'd rather give a chance to Rudy to prove that he really changed, than throw away a vote that makes sure that the Stalinists win.
You vote for Giuliani, you put your imprimatur on his actions in office and take responsibility for them.
Not me.