Christopher Pyne says the Liberal Party needs to focus on making it easier for "younger, career-minded" women to enter politics.

In an interview on the ABC's 7.30 program to talk about his new book, Mr Pyne said his party had suffered in the last decade from not having enough women in its party room.

Christopher Pyne has been showing off his more moderate side in recent months. Credit:Sean Davey

He agreed with acting host Sabra Lane that he wouldn't have been able to become a politician without the support of his wife, Carolyn.

"It's a real question as to whether women in the Liberal Party have that same support from their husbands, who are by and large, of course, in careers of their own," he said.