>Bluest county: Silver Bow County
Silver Bow’s Democratic roots date back to its 19th century copper mining industry and the labor unions its workforce organized. Although the industry dissolved in the latter half of the 20th century, Democratic leaning remains. Close to two-thirds of voters cast a ballot for Obama in 2012, helping to make Silver Bow County the bluest county in Montana. As is the case in many Democratic areas, residents are less wealthy than the average American. The typical household in Silver Bow County earns $37,503 a year, about $16,000 less than the national median household income.
>Bluest county: Douglas County
One of the redder states in the country, 61.0% of Nebraska voters cast their ballot for Romney in 2012. Even the bluest county in the state, Douglas County, cast a majority of its votes for Romney. Nevertheless, the 47.2% of votes Obama received from Douglas County voters was the highest such share of any Nebraska county. Douglas County lies in Nebraska’s 2nd Congressional District, which recently elected its first Democratic House representative in over a decade — despite restrictions implemented in 2011 that Democrats claimed would shift more Republican voters into the area.
>Bluest county: Clark County
Obama won 56.4% of the votes in Clark County, the highest share of any county in Nevada. The district reflects similar voting patterns as the state overall, as 52.0% of Nevada voters cast ballots for Obama. As a result of the 2010 Census, a new congressional district was created in Nevada that includes parts of Clark County. Democrat Steven Horsford became the first House representative elected in the district in 2012. In 2014, Republican Cresent Hardy became the second.
29. New Hampshire
>Bluest county: Cheshire County
With 46.0% of votes for Romney and 52.0% of votes for Obama, New Hampshire had one of the smallest margins of any state in the 2012 election. Cheshire County, however, was not as indecisive. Obama received 61.7% of county votes, the highest share of any New Hampshire county. Similarly, Romney’s 36.9% of the votes was the lowest share. In the last five congressional elections, New Hampshire’s 1st district which contains Cheshire County, elected a Democrat to the House of Representatives.
30. New Jersey
>Bluest county: Hudson County
Obama won 77.4% of the votes in Hudson County, the highest share of any county in New Jersey. Additionally, the three congressional districts that cover Hudson County have elected Democrats to the House of Representatives in each of the past five elections. Compared to Republican politicians, Democratic candidates often find greater support among minority groups. In Hudson County, less than 30% of residents identify as white, versus 62.8% of Americans.