Denis Thatcher 1979 general election to become the first female Prime Minister in British history. Denis Thatcher became the first husband of a British Prime Minister. In 1953, they had twin children (Carol and Mark), who were born on 15 August, seven weeks premature. Thatcher was watching the 1953 Ashes series at the time of the birth. Not long after the 1964 general election, Denis Thatcher suffered a nervous breakdown which put a severe strain on their marriage. The breakdown was probably caused by the increasing pressure of running the family business, caring for his relatives, and his wife's preoccupation with her
Margaret Thatcher the party. During her premiership Thatcher had the second-lowest average approval rating (40%) of any post-war Prime Minister. Since the resignation of Nigel Lawson as Chancellor in October 1989, polls consistently showed that she was less popular than her party. A self-described conviction politician, Thatcher always insisted that she did not care about her poll ratings and pointed instead to her unbeaten election record. Opinion polls in September 1990 reported that Labour had established a 14% lead over the Conservatives, and by November the Conservatives had been trailing Labour for 18 months. These ratings, together with Thatcher's combative personality and