In the 2016 primary, Democrats are united on trade while Donald Trump’s protectionism means that the Republicans are unusually divided

Historically, Republicans – and Republican presidential candidates – have been in favor of trade liberalization. This positive view of free trade has been challenged by Donald Trump’s protectionist ideology, which is aimed at increasing his support among blue-collar workers. Stephanie Rickard writes that even as the GOP is unusually divided over trade, the Democratic camp is united with both Hillary Clinton and Bernie Sanders opposing the Trans-Pacific Partnership deal pushed by President Obama last year