Question: when did the state of the union response start
Answer: 1966

title: Response to the State of the Union address
text: Response to the State of the Union address The response to the State of the Union address is a rebuttal speech, often brief, delivered by a representative (or representatives) of the opposition party following a presidential State of the Union address. When the president is a Democrat, the rebuttal is given by a Republican, and vice versa. The practice began in 1966 when Republican U.S. Senator Everett Dirksen (Illinois) and U.S. Representative Gerald Ford (Michigan) appeared on TV to offer a response to the address by Democratic President Lyndon Johnson. The opposition party's response has varied in format, ranging from