@Finn dAbuzz,
In all reality, very few. To be a liberal, one must be more anti-war than not. Yes, even I recognize some exceptions, most of those being when defense is necessary. To be a liberal, one must practice self-denial for the greater good. To be a liberal, one must be a committed environmentalist and committed to Zero Population Growth. To be a liberal, one must oppose all racial and ethnic prejudice.
Almost all liberals are "on the ground," that is, are people one meets in everyday life and few liberals are in power.