No, the abortion advocates completely ignore all research showing links between having an abortion and later having an elevated risk of breast cancer. The Susan Komen Foundation denies any links and refuses to fund any research on this subject.
Another unpublicized risk of abortion is to future children. Women are warned not to smoke during pregnancy, because of the danger to the fetus (some die, others have low birth weight which puts them at greater chance of dying within the first year after birth). A past abortion is just as dangerous as smoking--but unlike smoking, there is nothing to do to mitigate the risk.