After Kaieda was defeated in the 2014 election , Hosono ran for the DPJ leadership , but was defeated by former party president Katsuya Okada .
Hosono was cited as a possible successor to the party 's leader Banri Kaieda .
After Banri Kaieda was defeated in the 2014 election , Hosono ran for the DPJ leadership , but was defeated by former party president Katsuya Okada .
Hosono was cited as a possible successor to the party 's leader Banri Kaieda .