In March 1992, Oklahoma voters approved State Question 640. It passed by a margin of 56 percent to 44 percent, but with nothing else on the ballot that day, there was very low turnout.
The total number of voters was less than one-third (32 percent) of registered voters in the state, and it was less than half (48 percent) of the number of voters who would turn out later that year for the Presidential election. For example, President Bill Clinton, who received just 34 percent of the vote in Oklahoma in 1992, still had nearly 100,000 more votes than State Question 640.
continue reading SQ 640 has made Oklahoma ungovernable