 Clark County is a swing county in U.S. presidential elections that recently has voted slightly more Republican than the state and nation as a whole.For example, while President Obama carried Clark County by a few hundred votes representing a fraction of a percent, he ran behind his national showing of a 3% margin.George W. Bush carried the county twice, by 52% to 47% over John Kerry in 2004 and by 49% to 46% over Al Gore in 2000.