Adopting green transition policies may not be politically acceptable or supported by all governments. This paper examines whether countries that have a tradition of electoral democracy are more likely to adopt such policies, and whether this effect is impacted by the level of per capita income of an economy. The relationship is first explored theoretically and then empirically through a cross-country panel analysis over 1995-2020 for a wide variety green policies and outcomes. The results indicate that is difficult to reject the hypothesis that the association of cumulative democratic experience with these outcomes is conditioned on the per capita income of an economy. Relatively rich democracies were more likely to adopt green policies over 1995 to 2020 than relatively poor democracies. High-income democracies could benefit from leading international collaboration and policy coordination to facilitate low-carbon transitions among all democracies.