This study examines the impact of citizens' use of social media for political participation and expression in developing democracies of Africa in particular Uganda. Findings from studied N = 2,400 respondents, evidenced social media does matter in the developing democracy of Uganda as the second most preferred form of media (.95 ± 2.37). Findings also showed the use of social media for political participation in persuading others to vote for a given candidate or party was positively correlated r = .043*(p value at .05), n = 2,400, and p = .035 with R2 = .002. Future studies should examine the use of social media platforms for policy implementation, civic engagement, and inclusiveness.