The Leahs live at 945 Post Road in Brookfield, Wisconsin, (editorial comment) located in deep-red Waukesha County. Her approval rating among her base is a mere 1 percentage point higher than her disapproval rating. Yikes!
Source: Marquette Law School poll
According to Merriam Webster, the first known use of 'yikes' occurred in 1941.
Other coinages from the same year: