State Median Incomes

States with the highest median incomes tend to be Democratic states. The following is a ranking of states by median household income current as of 2011, their Democratic advantage according to Gallup, Representatives/Senators in Congress by party, party breakdown in the state legislature, and how they voted in the 2012 presidential election. Ultimately 13 of the 20 states with the highest median incomes had Democratic advantages according to Gallup polling.

List of States by Median Income
Determination of whether a state is Republican or Democrat is based solely on the Gallup data (Democrat Advantage); the state's ratios for Congress, the state legislature, and 2012 presidential election results are merely provided for informational purposes. For example, Colorado, New Hampshire, Iowa, and Virginia all voted for Obama in 2012 but Gallup polling reveals they are primarily Republican, and thus they are labeled Republican here, particularly since their legislative elections reveal them to be Republican. On the other hand Ohio, Pennsylvania, and Wisconsin have elected more Republicans at both the state and federal levels than Democrats, but are labeled as Democrat states because Gallup polling shows they have Democrat Advantages. States which could be classified as definite swing states include Colorado, New Hampshire, Ohio, and Wisconsin.

Analysis
Gallup polling generally lines up with how states voted for president in 2012. While states have increasingly become more Republican since 2012, the Gallup polling largely represents the ideology which has governed state employment in recent years, and a state's identity is generally clear. There are two states which should arguably be identified as Republican despite Gallup polling indicating they are narrowly Democrat, Kentucky and West Virginia. According to Gallup they narrowly polled Democrat, with 2% and 1% Democrat advantages respectively, yet both have elected more Republicans to both the state and federal legislature, and voted for Romney in 2012.