Mississippi's Republican Senate primary between incumbent Thad Cochran and challenger Chris McDaniel has attracted massive sums of campaign cash to a relatively small state.
With the final ballots still coming in Wednesday morning, the race looked like it would end up topping $40 per vote.
That's based on at least $12.4 million in spending and 300,000-plus ballots with only a few precincts remaining.
That total exceeds the $29 per vote that Republicans and third-party groups spent on Georgia's GOP Senate primary last month.
As a comparison, the 2012 presidential election between Barack Obama and Mitt Romney cost an estimated $7.13 per U.S. resident and $17.27 for each general election ballot.
The Cochran-McDaniel contest could continue for another three weeks. McDaniel had more votes than Cochran and Thomas Carey. But he needs at least 50% of the total cast plus one to have the majority needed to claim the Republican nomination.
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