The "beauty contest" nature of Missouri's presidential primary earlier this week may have contributed to the lowest turnout for a presidential primary in the state's history.
Just 8 percent of the state's registered voters cast ballots in the Republican and Democratic primaries. About 252,000 people voted in the GOP race, and 73,000 in the Democratic primary. While the Democratic vote awarded delegates, unlike the Republican contest, President Obama faced no serious opposition.
With the primary predicted to cost about $7 million, that works out to a cost of $21.45 per voter.
