2014, there was no mention of social issues in the official Blue Dog materials. Ideology and polls In 2019, the Pew Research Center found that 14% of Democratic and Democratic-leaning registered voters identify as conservative or very conservative, 38% identify as moderate, and 47% identify as liberal or very liberal. According to a 2015 poll from the Pew Research Center, 54% of conservative and moderate Democrats supported same-sex marriage in 2015. This figure represented an increase of 22% from a decade earlier. Current officeholders United States Senators Joe Manchin, Senator from West Virginia (2010–), Chair of the Senate Energy Committee (2021–), and Ranking Member of Senate Energy Committee (2019–2021) United States Representatives Sanford Bishop, United States Representative from Georgia's 2nd congressional district (1993–). Jim Costa, member of the United States House of Representatives from California's 16th congressional district (2013–) and California's 20th congressional district (2005–2013), member of the California Senate from the 16th district (1995–2002), and member of the California State Assembly from the 30th district (1978–1994). Henry Cuellar, member of the United States House of Representatives from Texas's 28th congressional district (2005–), 102nd Texas Secretary of State (2001), and member of the Texas House of Representatives (1987–2001). Josh Gottheimer, member of the United States House of Representatives from New Jersey's 5th congressional district (2017–), attorney, and writer. David Scott, member of the United States House of Representatives from Georgia's 13th congressional district (2003–), Chair of the House Agriculture Committee (2021–), member of the Georgia State Senate from the 36th district (1983–2003), and member of the Georgia House of Representatives (1975–1983). Governors John Bel Edwards, Governor of Louisiana (2016–). County Level Mark Hackel, County Executive of Macomb County, MI (2011–) Former officeholders Presidents of the United States Franklin Pierce, 14th President of the United States (1853–1857), United States Senator from New Hampshire (1837–1842), member of the United States House of Representatives from New Hampshire's at-large congressional district (1833–1837), Speaker of the New Hampshire House of Representatives (1831–1833), member of the New Hampshire House of Representatives from Hillsborough (1829–1833), Town Meeting Moderator for Hillsborough, New Hampshire (1829–1836), brigadier general in the United States Army (1847–1848), and colonel in the New Hampshire Militia (1831–1847). Andrew Johnson, 17th President of the United States (1865–1869), 16th Vice President of the United States (1865), United States Senator from Tennessee (1875, 1857–1862), Military Governor of Tennessee (1862–1865), 15th Governor of Tennessee (1853–1857), member of the U.S.