na-adjective
ultraconservative
Describes a person, group, or stance that is extremely resistant to change, especially in politics or social values. Often used critically.
彼の意見は超保守的で、改革には全く賛成しない。
His views are ultraconservative; he doesn't agree with any reforms at all.
その党
The party's ultraconservative policies failed to gain support from young people.