Introduction: Political participation, e.g. voting, is important as itallows people to influence national/regional politics. From an egalitarianperspective it is desirable that everyone, irrespective of age, sex,socioeconomic position, and health, has the possibility to vote. We studythe relationship between voting and a combination of mobility and threemeasures of socioeconomic position (social class based on occupation,years of education, and income). Methods: Two nationally representativeSwedish samples aged 53-75 were interviewed in 1968 and 1981respectively. Survivors from 1968 where re-interviewed in 1992 (n=461),survivors from 1981 in 2002 (n=614). Both 1992 and 2002 were electionyears in Sweden. The question posed was: did you vote in the election?Logistic regressions were controlled for sex, age, and cognition.Mobility, measured as walking aids outdoors was coded: 1)no aids;2)some aids (cane(s), quadruped(s), crutch(es), walker); 3)wheelchair/never go out. Results: Significant differences in voting were foundfor both sexes, for all measures of socioeconomic position – people witha high socioeconomic position being more likely to have voted. Theassociation between voting and socioeconomic position varied overmobility, but not systematically: social class had the strongest associationamong men without walking aids; education among men using someaids; and income for men using a wheelchair/not going out. Social classand income had the strongest associations among women with someaids, education among women without aids. Conclusions: There are systematicsocioeconomic differences in political participation measuredby voting, but no systematic pattern in how the associations vary overmobility.