The brother of US presidential candidate Bernie Sanders has spoken of his pride at his sibling's romping primary victory over Democrat nomination rival Hillary Clinton.
Oxford-based Larry Sanders, 80, is six years older than his brother, who scored a win at the first primary in New Hampshire.
The 74-year-old left-wing candidate won more than 60% of the vote over the former secretary of state on Tuesday.
With Ms Clinton winning the first caucus in Iowa, Larry Sanders, a former social worker who moved to the UK from Brooklyn, New York, in the 1960s, said his sibling had done better than he expected.
He told the Press Association: "The great thing about winning is that he will be on the front pages and blasting out of televisions and the radios. More people will then have to think about him, so it might well do the trick."
Larry Sanders said the race to win the Democrat nomination is going to be "very competitive" and the "Clintons are going to get very dirty" in their tactics.
"But I think his chances are very good - which is hard to absorb," he added.
The Democrat candidate's policies include breaking up the big banks, creating more jobs for youngsters, a single-payer national health care programme and free university tuition.
Larry Sanders said it was "amazing and magical" to see support growing for his brother and his policies.
The politician told crowds in his victory speech on Tuesday: "It is a political revolution that will bring tens of millions of people together.
"It will bring together working people who have given up on the political process. It will bring together young people who have never participated in the political process.
"It will bring together blacks and whites, Latinos, Asian Americans, Native Americans, straight and gay, male and female - people who were born in America and people who immigrated here.
"We will all come together to say loudly and clearly that the government of our great nation belongs to all of us - not just a few wealthy campaign contributors."
As the battle moves to other states, he added: "Now it is on to Nevada, South Carolina and beyond."
Donald Trump took victory in the Republican contest with more than 35% of the vote, after coming second to Ted Cruz in Iowa.
About 550,000 voters turned out for the New Hampshire primary, a reported record for the state which has a population of 1.3 million.
The next big date in the presidential election calendar is Super Tuesday on March 1, when more than 15 states will hold caucuses and primaries at the same time.