Pennsylvania and Wisconsin, two states seen as must-wins in the Nov. 5 presidential election, have failed to adopt electoral reforms intended to avoid a repeat of the chaos that followed Republican Donald Trump’s attempts to overturn his 2020 defeat.

Democratic Vice President Kamala Harris and former President Trump are locked in a tight contest in those two states, public opinion polls show. They are the heart of the “Blue Wall” states of America’s former industrial heartland that are likely to play a critical role in either candidate’s path to victory.