Other politicians that have considered running for office have extended families; why should Senator Clinton becoming a grandmother affect her aspirations? Senator Clinton is not going to be a direct caretaker of the child and her daughter will not be in need of additional care of her child. Other candidates are or will be grandfathers, why should a grandmother be any different?
I don't think so because she is a very headstrong woman, not to say that the pregnancy did not happen at the best time for Hillary because I do not know if it did for sure. Hillary Clinton will probably remain doing what she's been doing because she may not be good at anything else besides politics.
American civilization is based on 'family' as core unit. Chelsea Clinton becomes mother and Hillary Clinton becomes grand mother is their plus point. The family has gone through turmoil and is united. The good work has to begin at home. If Hillary makes good wife, good mother and good grand mother then she can make good 'President', as well.
I however, do not see why it would stop Hilary Clinton. Many people run for office and the Presidency with kids. What is the difference between their own kids and a grand\kid? This story is just more made up nonsense in hopes that Hilary Clinton will not run for President.