Only scattered challenges to certification of the midterm election have been reported in the United States, and not a single one is based on any problems with the accuracy of the results. The biggest certification challenge comes in a lightly populated county in southeastern Arizona. The state's secretary of state has sued the Republican-controlled commission to force it to sign off on the election. While the overall number of certification fights is less than expected, election experts are concerned about what the attempts to delay or stop certification of accurate election results signals for the next presidential contest.