Mitt Romney running mate Paul Ryan unveiled in Virginia

US Republican presidential candidate Mitt Romney has named fiscal conservative Paul Ryan as his running mate in November's election.

Mr Ryan, 42, is a Wisconsin congressman and chairman of the House of Representatives budget committee.

Mr Ryan told supporters in Norfolk, Virginia that Mr Romney would "restore the greatness of this country".

"Mitt Romney is a leader with the skills, the background and the character that our country needs at a crucial time in its history," Mr Ryan said.

"Following four years of failed leadership, the hopes of our country, which have inspired the world, are growing dim, and they need someone to revive them. Governor Romney is the man for this moment."