Both parties are mostly groups of "single issue voters".

How do you think a gay man is able to talk at RNC and them having "gay cure" support in their platform? Because when you put all of the different positions in one document - they tend to contradict the majority's views. (Outright ban on abortion is supported only by a third of republicans! SSM ban is also supported by a third.)

Independents are more liberal on the topic of abortion than democrats...