The difficulty with the path of trying to elect candidates that promise action on a particular issue is that there are always thousands of issues and no given c

The difficulty with the path of trying to elect candidates that promise action on a particular issue is that there are always thousands of issues and no given candidate is likely to support all of your preferences so you have to decide which is more important. If a candidate agrees with you on single use plastics but is in opposition to your views on prison reform, which one do you give more importance? It's just one of the quirks of representative democracy that keeps issues with lower noise from being addressed.