Due to the demographic growth of older population segments, psychological research is increasingly devoted to the determinants of successful aging. The current study investigates the relationship between older people’s self-perception of aging and its potential political and psychosocial antecedents. We concentrate on a subjective aspect of successful ageing, so we refer to these self-perceptions as self-rated successful ageing. We examine two groups of potential antecedents of self-rated successful ageing associated with political participation (political subjectivity and political agency) and the resources that an individual possesses: personal (a sense of autonomy) and social (perceived social support). Informed by previous research, our study compares two age-separated groups of older people—conveniently labeled the Young-Old (Y-O), aged 65–74, and the Old-Old (O-O), aged 75–95. In line with prior findings, our regressions confirm the importance of autonomy as a positive self-rated successful ageing predictor among the elderly, regardless of whether they fall into the Y-O or O-O group. Political subjectivity, however, turns out to be a significant predictor of self-rated successful ageing only in the Y-O group of the elderly.