The evidence suggests you can't even promote it, much less enforce it. Abstinence-only education fails to result in abstinence, but what it does result in is more people being unprepared when they have sex, and thus higher unwanted pregnancy rates. Why not work with the liberals to address that? After all, a large share of those unwanted fetuses will end up dying, one way or the other, so if preventing fetal deaths is the goal (rather than just punishing women), preventing those unwanted pregnancies will do that.
Here are some interesting statistics on the rate of abortion on Guttmacher.
"The highest annual rate of abortion in 2010–2014 was in the Caribbean, estimated at 59 per 1,000 women of reproductive age, followed by South America, at 48. The lowest rates were in Northern America, at 17, and in Western and Northern Europe—at 16 and 18, respectively.
• Across all world subregions,
Eastern Europe experienced the largest decline in its abortion rate, from 88 per 1,000 in 1990–1994 to 42 per 1,000 in 2010–2014, which corresponded with an increase in access to modern contraceptives following the dissolution of the Soviet Union.
• As of 2010–2014, the overall abortion rate in Africa is 34 per 1,000 women. Subregional rates range from 31 in Western Africa to 38 in Northern Africa; abortion rates in these subregions have changed little or not at all since 1990–1994.
• In Latin America and the Caribbean, subregional abortion rates range from 33 in Central America to 48 in South America to 59 in the Caribbean. The overall regional rate has hardly changed since 1990–1994.
• In Asia, the average abortion rate is 36 per 1,000 women. Most subregional rates are close to this figure; Central Asia is higher at 42. The regional rate has changed little since 1990–1994."
(Source:
https://www.guttmacher.org/fact-sheet/induced-abortion-worldwide)
It's interesting that in countries with access to health care, information, and most of all contraceptives the lowest rates occur, whereas in other countries (note the high incidence in predominantly-Catholic Latin America) they have the highest rates.