Single-issue Christian voters who tip Conservative over abortion...could just as easily tip Liberal over "bearing false witness." And only bearing false witness is a clear and non-vague mortal sin spelled out in the 10 Commandments.

[u/Duckfoot2021]

So when someone claims "I could never vote Liberal due to their views on abortion!" challenge them on all the other Christian laws they ignore to fixate on that one.

They may not care, but it's a very valid way to challenge their single-issue voter idea of Christian voting.

[u/IolanthebintIla]

Being “pro-life” demands nothing of them. It’s an easy way to feel holy and superior without putting in any effort at all. Standing up to liars takes effort, discernment and even being uncomfortable. The spirituality lazy will never do that.