Many people don't like everything the L. party platform covers (abortion & drug use especially) ; I don't like the abortion aspect but other than that, I'm happy with the party platforms. If they want to get broader, they'll have to drop the pro-abortion aspect.
If a good constitution party is established I would consider switching ... the Tea Party is OK but it does nothing really in respect to abortion issues.
The Libertarian party is
not pro-abortion. Abortion is the only significant topic that I have found that the Libertarian party is divided on. On just about every other topic there is a hard and fast position. Some Libertarians believe the fetus is endowed with all rights and therefore abortion is wrong, and other Libertarians feel that the rights of the fetus (whatever they may be) don't trump the rights of the mother to control her body. The Libertarian position is thus that government should simply stay out of the abortion issue completely - and that includes any subsidies for it, etc.
So if you want
government to prohibit abortion and have a politician tell a woman when and under what circumstances she can decide what her body does and doesn't get used for, then that would be at odds with the Libertarian position. If you think abortion is wrong, teach your children that abortion is wrong, etc., then you'd hold the same position as a lot of Libertarians.
That said, if drugs and abortion are the only two topics that you fail to see eye-to-eye with the Libertarians, that's not too bad vs. the other choices. Certainly there are likely many points of disagreement with either of the two currently-controlling parties. Significantly the Republicans (and their appointed judges and justices) tend to be law-and-order to the point of stomping all over the 4th and 5th amendment at nearly every opportunity.
With Libertarians you shouldn't ever need to concern yourself with the government doing something to you that you don't like. It sounds like your only area of concern is that you
want the government to do something to some people (women seeking abortions).
In my opinion the Republicans are just as much big-government Nazis as the Democrats, they just want a
different big government and want to rule your personal life in a different way than the Democrats do.
If you want a government controlled by a party that doesn't want to
rule you, your only choice is really the Libertarians (as I see it).
Link to Libertarian Party Platform:
http://www.lp.org/platform
Copy/paste of abortion platform:
1.4 Abortion
Recognizing that abortion is a sensitive issue and that people can hold good-faith views on all sides, we believe that government should be kept out of the matter, leaving the question to each person for their conscientious consideration.