And I guess that tells you nothing about the voters she was trying to attract?
I can find no reference to Hart's position on abortion but he and his wife Jane Briggs Hart were connected heavily on the Catholic left. That suggests that he was pro-life as many Catholics of all stripes tend to be but I cannot say with certainty what his position was. So Lenore MAY have been appealing to pro-aborts by being "ambivalent" in her public commentary until 1972 when she had learned her bitter lesson about how unqualified she was as a GOP candidate.
On antiwar issues, Hart took an extreme position and was arrested in an antiwar demonstration with his wife. Lenore took a slightly less extreme position (calling for the US to cut and run by 1971 when she imagined she might be a Senator and did not get arrested. Hart was a war hero and was badly wounded in the D-Day invasion suffering permanent injury to his right arm by shrapnel, and reached the rank of Lt. Colonel by the end of his service. I thoroughly disagree with antiwar types and particularly with opponents of the Viet Nam War. Nonetheless, Philip Hart earned respect.
All that having been said, what is your point and what SHOULD we conclude about the votes Lenore Romney was seeking? Her performance in that 1970 election made Christine O'Donnell and Sharon Angle in 2010 look like electoral Babe Ruths.