Extant relevant literature suggests that nonmarket elements such as social ties are important strategic options that may help organisations enhance their competitiveness relative to other competitors when bidding for important supply jobs. However, our current understanding of their effects on organisational outcomes, especially in public supplier selection decisions in emerging economies, is far from complete. Using a sample of 342 experienced senior management team (SMT) members and senior level staff in 40 public sector organisations in Nigeria, this study examined the relative importance of business and political ties as sources of advantage and strategic intelligence for prospective vendors and contractors during strategic supplier selection decisions. Our findings show that both business and political ties are significant predictors of supplier selection outcomes, and their relative importance in the selection outcome is indistinguishable and key to strategic decision making. Overall, our result suggests that both business and political ties can be utilised as sources of important resources by supplier firms.