 After that Mosley started his move towards fascist policies, losing many of those who had joined the New Party as a result.During their marriage, her younger sister, Lady Alexandra, was a mistress of Oswald Mosley, as was, briefly, their stepmother, Grace Curzon, Marchioness Curzon of Kedleston.All the New Party's candidates in the 1931 election lost their seat or failed to win in constituencies, instead seeing a unified coalition government which involved the Conservatives, Liberals and a breakaway from the main Labour Party amid the Great Depression.