STAMFORD — The guest list at Planned Parenthood of Southern New England’s annual fundraiser grew this year by more than 100 people, a change its leaders attribute to the political climate. Last year, Planned Parenthood’s Stamford center left its facility of 37 years on East Main Street for a renovated building on Sixth Street. Besides the basic reproductive health care and cancer screenings offered at all locations, Stamford has the only Planned Parenthood in Fairfield County that offers on-site surgical abortions.