Some Republican Greek-Americans voted for Michael Dukakis. Had Colin Powell been picked as Bush's v.p., many Democratic blacks would have voted for the GOP ticket. I am Jewish. If in addition to public reasons, I opine for Lieberman in the months to come for personal or parochial reasons, I will do everything I can to let readers know that's what I'm doing. Actually, if I do end up pulling the Democratic lever, it will be for more than that.
Nothing is for free in politics.
Lieberman has a downside for Democrats. He will be attacked by the left wing of the Democratic left. The man is just too sensible. For example, he has supported experiments with school vouchers and shown open-mindedness about independent investment accounts within Social Security. These views have been attacked by many Democrats, including Gore.