'Little-known' Walker emerges as main rival for Jeb Bush
Scott Walker, the little-known governor of Wisconsin, is emerging as the main challenger to Jeb Bush in the race to become the Republicans' 2016 presidential candidate.
While Mr Bush is raising tens of millions of dollars and attracting huge media attention across the country, polls indicate a quiet momentum is building for the more conservative Mr Walker.
However, the 47-year-old governor is trailing Mr Bush by just a few points in the polls in Iowa, New Hampshire and South Carolina - the three early voting states that will shape the course of the Republican primary election.
Although far from a household name, Mr Walker is beloved by many Republicans for winning a series of bruising showdowns with public sector unions in Wisconsin.
Mr Walker, who never graduated from university, made headlines during a trip to London last week by refusing to say if he believed in evolution. (© Daily Telegraph, London)