Unless you're vegan, you participate in the ending of life as well.

At the stages of development when most abortions are performed, the life that is being ended is much less of a life than that of a cow, or pig, or chicken, or even fish, that ends up being killed for food.

If people truly believe that ending abortion is a moral and ethical issue, then the only consistent stance is to also be vegan and push for laws requiring everyone else be vegan.