In case your are wondering just what is going on, SurveryUSA apparently conducted two Missouri polls concurrently. This one (which samples 1,523 likely voters and has an MoE of 2.1%) and their Veepstakes edition (which sampled 600 registered voters and has an MoE of 4.1%).

I know which one I like better…

SurveyUSA Missouri General Election poll, conducted May 16th-18th, 2008.

• John McCain 48%
• Barack Obama 45%

SurveyUSA interviewed 2,050 Missouri adults 05/16/08 through 05/18/08. Of the adults, 1,857 were registered to vote. Of the registered voters, 1,523 were determined by SurveyUSA to be likely voters in the 11/04/08 election for President of the United States.

Hat-tip to R4′08 reader Adam.