Abe won a massive election victory in December 2012 on a promise of higher inflation. He was subsequently re-elected in 2014 and 2017, again by a huge margin. This sort of political success is actually very unusual in Japan, where PMs tend to come and go. It's also unusual that he made such a big issue of inflation, in a country full of elderly savers. (So much for armchair public choice theory.) So how's he doing after 5 years, apart from being highly popular?