I believe abortion is evil. But I also believe you'll find abortion supporters in both the GOP and Democrat Party (admittedly, many more among Dems). It makes labeling one party's voters as evil quite difficult.
I would agree that many policies supported by the Democrat Party enable evil people to use them toward their own end. I do not think the average Democrat voter understands the full consequences of their vote, or the evil ends that result from policies they support. The distinction I make is between people who take action knowing full-well what harm will result, versus people who take action out of a misguided sense of charity (or in the case you cited, of personal rights). One is evil, the other is ignorant. JMHO.