It is only one issue. I agree.One is always dealing with a mixed bag when supporting a political party or a political candidate. Abortion is only one among a plethora of issues in a party or candidate’s platform.
My objection to the Libertarian and Democratic parties is over a moral issue - abortion. If I agreed 99.99% with the Libertarian party (which is not far off from the truth) but they affirm the right of a state or person to kill a child then I will not support that party. If this means my loss of freedoms then so be it. I will not support abortion with my voice because I believe that we are responsible for what we support.
I believe that we will be held accountable. I already have enough to answer for without adding the killing of children to the list.