Since what event has the term smoke-filled room come to mean "a place behind the scenes where hypothetical cigar-smoking party bosses choose candidates"?

Question

Since what event has the term smoke-filled room come to mean "a place behind the scenes where hypothetical cigar-smoking party bosses choose candidates"?​

Quizplus · Accepted Answer

The term "smoke-filled room" became popularized after the 1920 Republican National Convention, where party leaders allegedly selected Warren G. Harding as their presidential nominee in a private room filled with cigar smoke. This power broker system of choosing candidates behind closed doors became a symbol of political corruption and has been referenced in politics ever since.

Since What Event Has the Term Smoke-Filled Room Come to Mean