Japan’s potential kingmaker Yuichiro Tamaki faces a hazardous path as he looks to remain a power broker well beyond Monday’s vote to decide the fate of Prime Minister Shigeru Ishiba.

By quadrupling its support in the lower house election two weeks ago, Tamaki’s Democratic Party for the People has transformed itself from a political grouping on the fringes of parliament to the main prop ensuring Ishiba can win re-election and proceed with policy.