Interest groups and political parties combined reported spending $16,849,010 on independent campaigning in the Nevada Senate race this year. Ten million went to the Republican cause; six million to the Democrats.

WaPo has the full list. The top five spenders:

  • Karl Rove’s American Crossroads ($3,874,505)
  • Craig Varoga’s Patriot Majority ($2,791,980)
  • DSCC ($1,992,222)
  • Our Country Deserves Better/Tea Party Express ($950,328)
  • Ending Spending Fund ($862,432)