Margaret Madeline Chase Smith was an unsuccessful candidate for the Republican nomination in the 1964 presidential election, but was the first woman to be placed in nomination for the presidency at a major party's convention.
geraldine ferraro first women on US president
There is no salary for the first lady.
The current first lady is Michelle_Obama, wife of President Barack_Obama.
The current first lady is Michelle_Obama, wife of President Barack_Obama.
She is referred to as the first lady.
Currently (in December 2015), the First Lady is Michelle Obama; she is the first woman of color in US history to be First Lady. When her husband Barack Obama's term as president ends, the US will have a new president and a new first lady---or if a woman wins, we will have a First Gentleman.
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She is the wife of the president or the official White House hostess if the president is not married. ( Michele Obama is the first lady at this date in 2011.)
In the US, there hasn't been one.
Lady Bird Johnson, wife of President Lyndon B. Johnson was the First Lady of the United States in 1964.
Because she is married to the President of the US, the First Citizen. The custom of calling the wife of the President the "First Lady" goes back almost to the time of George Washington.