How can Republicans want McCain, Gingrich, or Giuliani to run?

Republicans, like Democrats, are under a wide umbrella. This is a way of saying that not all Republicans are Christians who only care about what goes on in the bedroom and Democrats aren't all abortion loving. That is an over-simplification but not everyone thinks the same in either party and I hope they do run and I would like to Harry Reid, Democrat from Nevada run too. You know he is against abortion.