#' 2012 and 2016 Presidential Elections
#'
#' US Presidential Election results in 2012 and 2016, by county.
#'
#' Sf object, unprojected. EPSG 102434: WGS84.
#'
#' @format An sf data frame with 3108 rows, 74 variables, and a geometry column:
#' \describe{
#' \item{ STATEFP }{ State FIPS code }
#' \item{ COUNTYFP }{ County FIPS code }
#' \item{ GEOID }{ Geographic area ID }
#' \item{ ALAND }{ Land area }
#' \item{ AWATER }{ Water area }
#' \item{ area_name }{ County name }
#' \item{ state_abbr }{ State abbreviation }
#' \item{ PST045214 }{ Population, 2014 estimate }
#' \item{ PST040210 }{ Population, 2010 (April 1) estimates base }
#' \item{ PST120214 }{ Population percentage change - April 1, 2010 to July 1, 2014 }
#' \item{ POP010210 }{ Population, 2010 }
#' \item{ AGE135214 }{ Percentage of persons under 5 years, 2014 }
#' \item{ AGE295214 }{ Percentage of persons under 18 years, 2014 }
#' \item{ AGE775214 }{ Persons 65 years and over, percentage, 2014 }
#' \item{ SEX255214 }{ Percentage of female persons, 2014 }
#' \item{ RHI125214 }{ Percentage of white alone, 2014 }
#' \item{ RHI225214 }{ Percentage of black or African American alone, 2014 }
#' \item{ RHI325214 }{ Percentage of American Indian and Alaska Native alone, 2014 }
#' \item{ RHI425214 }{ Percentage of Asian alone percentage, 2014 }
#' \item{ RHI525214 }{ Percentage of Native Hawaiian and Other Pacific Islander alone, 2014 }
#' \item{ RHI625214 }{ Percentage of two or More Races, 2014 }
#' \item{ RHI725214 }{ Percentage of Hispanic or Latino, 2014 }
#' \item{ RHI825214 }{ Percentage of White alone, not Hispanic or Latino, 2014 }
#' \item{ POP715213 }{ Living in same house 1 year & over, percentage, 2009-2013 }
#' \item{ POP645213 }{ Foreign born persons, percentage, 2009-2013 }
#' \item{ POP815213 }{ Language other than English spoken at home, pct age 5+, 2009-2013 }
#' \item{ EDU635213 }{ High school graduate or higher, percentage of persons age 25+, 2009-2013 }
#' \item{ EDU685213 }{ Bachelor’s degree or higher, percentage of persons age 25+, 2009-2013 }
#' \item{ VET605213 }{ Veterans, 2009-2013 }
#' \item{ LFE305213 }{ Mean travel time to work (minutes), workers age 16+, 2009-2013 }
#' \item{ HSG010214 }{ Housing units, 2014 }
#' \item{ HSG445213 }{ Homeownership rate, 2009-2013 }
#' \item{ HSG096213 }{ Housing units in multi-unit structures, percentage, 2009-2013 }
#' \item{ HSG495213 }{ Median value of owner-occupied housing units, 2009-2013 }
#' \item{ HSD410213 }{ Households, 2009-2013 }
#' \item{ HSD310213 }{ Persons per household, 2009-2013 }
#' \item{ INC910213 }{ Per capita money income in past 12 months (2013 dollars), 2009-2013 }
#' \item{ INC110213 }{ Median household income, 2009-2013 }
#' \item{ PVY020213 }{ Persons below poverty level, percentage, 2009-2013 }
#' \item{ BZA010213 }{ Private nonfarm establishments, 2013 }
#' \item{ BZA110213 }{ Private nonfarm employment, 2013 }
#' \item{ BZA115213 }{ Private nonfarm employment, percentage change, 2012-2013 }
#' \item{ NES010213 }{ Nonemployer establishments, 2013 }
#' \item{ SBO001207 }{ Total number of firms, 2007 }
#' \item{ SBO315207 }{ Black-owned firms, percentage, 2007 }
#' \item{ SBO115207 }{ American Indian- and Alaska Native-owned firms, percentage, 2007 }
#' \item{ SBO215207 }{ Asian-owned firms, percentage, 2007 }
#' \item{ SBO515207 }{ Native Hawaiian- and Other Pacific Islander-owned firms, percentage, 2007 }
#' \item{ SBO415207 }{ Hispanic-owned firms, percentage, 2007 }
#' \item{ SBO015207 }{ Women-owned firms, percentage, 2007 }
#' \item{ MAN450207 }{ Manufacturers shipments, 2007 ($1,000) }
#' \item{ WTN220207 }{ Merchant wholesaler sales, 2007 ($1,000) }
#' \item{ RTN130207 }{ Retail sales, 2007 ($1,000) }
#' \item{ RTN131207 }{ Retail sales per capita, 2007 }
#' \item{ AFN120207 }{ Accommodation and food services sales, 2007 ($1,000) }
#' \item{ BPS030214 }{ Building permits, 2014 }
#' \item{ LND110210 }{ Land area in square miles, 2010 }
#' \item{ POP060210 }{ Population per square mile, 2010 }
#' \item{ Demvotes16 }{ Votes for Democratic candidate in 2016 presidential election }
#' \item{ GOPvotes16 }{ Votes for Republican candidate in 2016 presidential election }
#' \item{ total_2016 }{ Total number of votes cast in 2016 presidential election }
#' \item{ pct_dem_16 }{ Votes for Democratic candidate as percentage of total votes }
#' \item{ pct_gop_16 }{ Votes for Republican candidate as percentage of total votes }
#' \item{ diff_2016 }{ Difference between the number of votes for Republican and Democratic candidates }
#' \item{ pct_pt_16 }{ The number in diff_2016 expressed as a percentage of the total votes. Negative if fewer votes were cast for the Democratic candidate }
#' \item{ total_2012 }{ Total number of votes cast in 2012 presidential election }
#' \item{ Demvotes12 }{ Votes for Democratic candidate as percentage of total votes }
#' \item{ GOPvotes12 }{ Votes for Republican candidate as percentage of total votes }
#' \item{ pct_dem_12 }{ Votes for Democratic candidate as percentage of total votes }
#' \item{ pct_gop_12 }{ Votes for Republican candidate as percentage of total votes }
#' \item{ diff_2012 }{ Difference between the number of votes for Republican and Democratic candidates }
#' \item{ pct_pt_12 }{ The number in diff_2012 expressed as a percentage of the total votes. Negative if fewer votes were cast for the Democratic candidate }
#' }
#' @source \url{https://github.com/tonmcg/US_County_Level_Election_Results_08-16} and \url{https://www.kaggle.com/benhamner/2016-us-election}
#'
#' @examples
#' if (requireNamespace("sf", quietly = TRUE)) {
#' library(sf)
#' data(elections1216)
#'
#' plot(elections1216["diff_2012"])
#' }
"elections1216"
