First of all, this poll doesn't make it clear what trimester the abortion would occur, so the people who are against abortion in this case I assume are against abortion even in the first month or so.
Calling the abortion of a one-month old fetus a "human being" is against all logic and common sense. A one month old, or even a few month old fetus, is not a human being, therefore it's killing cannot be called murder. Do we look at a miscarriage of a fetus of a few months in the same way as a murder or the tragic death of a living, breathing human being? Murder is the killing of a human being, and at least in the United States, there is a clear understanding of what a human being is. Surely you cannot say that it is just as evil and wrong to abort a two month old fetus as it is to murder one of the members of this forum. It DOES become murder later in the fetus's development, when it is nearing the phase where it could be fully viable outside of the womb. You can call it something else, fetuside, or some other term, but calling it murder is disingenuous and faulty.