Abortion is a pretty contentious issue for both big and small l libertarians. Generally it is not a litmus test for a person's libertarian-ness like it is for democrats and republicans.
> Generally it is not a litmus test for a person's libertarian-ness like it is for democrats and republicans.
That litmus test will misclassify 18% of Democrat/lean Dem and 38% of Republican/lean Rep. As a litmus test for determining party affiliation, it's shit.
> Generally it is not a litmus test for a person's libertarian-ness
Well sure, if you define "libertarian" as "hypocritical bro who wants the government to not touch his own personal things but feel free to go nuts on women, minorities, bailing out huge banks I make use of with taxpayer money", the abortion issue is not much of a litmus test.
Otherwise calling abortion a "contentious" issue for dictionary-definition libertarianism, that's something libertarians would think to make themselves feel better about supporting the most intrusive government overreach imaginable.
Although the libertarian party doesn't speak for all - here is a decent summary: https://www.lp.org/libertarians-on-abortion/