Tomorrow, France goes to the polls for one of the most tightly-contested presidential elections in its history. Among the candidates aiming to reach the second round is Jean-Luc Mélenchon, a veteran left-winger representing France Insoumise.

The American business press is already describing him as “scarier for investors than Marine Le Pen,” but what, exactly, are his economic proposals? And how radical would they be?

Journalist Cole Stangler interviewed senior Mélenchon advisor Liêm Hoang-Ngoc, a lecturer in economics at the Panthéon-Sorbonne University, about his plans.