Populist parties address issues that have traditionally been left off the political agenda because they do not have coherent views on key issues. Populism uses new issues to rally people behind them, but are not actually well equipped enough to address other issues. The fact that populism rests on one solution to multitudes of problems, shows that their policies are not complex enough to solve all the problems necessary to further the greater good.
For example, presidential candidate Bernie Sanders suggests universal healthcare to help solve the issue of lower-class citizens possessing more health problems. However, by subscribing to this solution as a way to solve it, it does not account for the fact that those with less money cannot prevent health issues as easily. This shows that by providing a single simple solution to major problems, populism often ignores the underlying causes.