Indeed, semantics of the title brings some specifics.

For most of the time, there did exist two Chancellor posts in China, the Right 左丞相 and Left 右丞相 Chancellors— names which bore no connection to politics of modernity. Albeit these two were not always occupied, and some influential persons managed to dominate the position alone. Which you across the pond now have.

I hope this will boil down to better results than during Dick Cheney's tenure, when he could be considered not the first person in the state, but not the second highest either.