Former Secretary of State John Kerry is one of the richest people ever to win the Democratic party's presidential nomination, which he did in 2004.
But his background was used to portray him as an out-of-touch elitist. He lost to George W Bush, who also came from substantial family wealth.
Kerry's £100 million fortune is tied up in a portfolio of properties and other investments.
But it is dwarfed by the fortune of his wife, Teresa Heinz Kerry, who inherited vast sums from her late husband, John Heinz, a member of the ketchup dynasty.
The New York Times has estimated her fortune at $1 billion.
The couple signed a prenuptial agreement before their 1995 marriage, and keep their financial affairs separate.