How did Koizumi Junichiro respond to Liberal-Democratic Party members who opposed postal privatization?

When Prime Minister Koizumi Junichiro faced resistance from members of the Liberal-Democratic Party regarding his plan to privatize the Japanese postal system, he responded by taking decisive political action. After the House of Councillors defeated his privatization proposal in 2005, Koizumi called for new elections in the House of Representatives. Furthermore, he purged the LDP of those who opposed his reform plan. He then contested the subsequent September 2005 election on the platform of postal privatization, which resulted in a landslide victory for the LDP and provided him with an emphatic public endorsement of his policies.12