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Illinois

The Old Northwest · in the Union from 1826 · 21 electoral votes · 1,520,048 souls (1860 census)

I · The presidential vote, left against right

Illinois · left-bloc share0257510018161820182418281832183618401844184818521856186018641868501828: left bloc 50.2%1832: left bloc 51.8%1836: left bloc 51.6%1840: left bloc 51.4%1844: left bloc 50.5%1848: left bloc 48.2%1852: left bloc 45.5%1856: left bloc 58.6%1860: left bloc 59.2%1864: left bloc 53.1%

The gold line is the left bloc's share of the vote — parties left of the spectrum midline against everything from the midline rightward. Hover, tap or tab a cycle for the posted board.

II · The House delegation, cycle by cycle

Illinois · House delegation02575100161820222426283032343638404244464850525456586062646668501826 delegation1828 delegation1830 delegation1832 delegation1834 delegation1836 delegation1838 delegation1840 delegation1842 delegation1844 delegation1846 delegation1848 delegation1850 delegation1852 delegation1854 delegation1856 delegation1858 delegation1860 delegation1862 delegation1864 delegation1866 delegation

Each line is a party's share of the delegation's seats — above the dashed rule, one party holds the house alone. Hover, tap or tab a cycle to post its full slate.

III · Party control, cycle by cycle

Illinois · party controlterritory161820222426283032343638404244464850525456586062646668Presidential voteRadLibNatPopDem1816 · President Outside the Union1818 · President Outside the Union1820 · President Outside the Union1822 · President Outside the Union1824 · President Outside the Union1826 · President No race1828 · President Andrew Jackson · Rad — 50.2% Alexander Macomb · Nat — 49.8%1830 · President Radical — held — no race1832 · President DeWitt Clinton · Rad — 51.8% Alexander Macomb · Nat — 48.2%1834 · President Radical — held — no race1836 · President Karl von Weishaupt · Lib — 51.6% Zachary Taylor · Nat — 48.4%1838 · President Liberal — held — no race1840 · President Sam Houston · Lib — 51.4% Zachary Taylor · Nat — 48.6%1842 · President Liberal — held — no race1844 · President J.B. Stoner · Lib — 50.5% Daniel Webster · Nat — 44.1% James Buchanan · UC — 5.4%1846 · President Liberal — held — no race1848 · President James A. Pearce · Nat — 51.8% J.B. Stoner · Lib — 48.2%1850 · President National — held — no race1852 · President James A. Pearce · Nat — 54.5% Samuel Houston · Lib — 45.5%1854 · President National — held — no race1856 · President James A. Pearce · PopDem — 45.6% John Motley Morehead · Nat — 41.4% Preston Brooks · Lib — 13.1%1858 · President Popular Democratic — held — no race1860 · President Abraham Lincoln · PopDem — 59.2% Daniel F. Webster · Nat — 38.1% Thomas F. Bowie · SN — 2.7%1862 · President Popular Democratic — held — no race1864 · President Abraham Lincoln · PopDem — 53.1% Robert E. Lee · Nat — 46.9%1866 · President Popular Democratic — held — no race1868 · President Popular Democratic — held — no raceGovernorWhigLibPopDem1816 · Governor Outside the Union1818 · Governor Outside the Union1820 · Governor Outside the Union1822 · Governor Outside the Union1824 · Governor Outside the Union1826 · Governor No race1828 · Governor Whig · Whig — 40.8% Radical · Rad — 32.0% National · Nat — 27.2% Tory · Tory — 0.0%1830 · Governor Whig — held — no race1832 · Governor Whig · Whig — 39.0% Radical · Rad — 38.9% National · Nat — 22.1% Tory · Tory — 0.0%1834 · Governor Whig — held — no race1836 · Governor Liberal · Lib — 59.6% National · Nat — 40.4%1838 · Governor Liberal — held — no race1840 · Governor Liberal · Lib — 50.7% National · Nat — 49.3%1842 · Governor Liberal — held — no race1844 · Governor Liberal · Lib — 53.3% National · Nat — 46.7%1846 · Governor Liberal — held — no race1848 · Governor National · Nat — 52.3% Liberal · Lib — 47.7%1850 · Governor National — held — no race1852 · Governor Liberal · Lib — 46.8% National · Nat — 41.3% Popular Democratic · PopDem — 11.9%1854 · Governor Liberal — held — no race1856 · Governor Popular Democratic · PopDem — 38.4% National · Nat — 31.8% Liberal · Lib — 29.8%1858 · Governor Popular Democratic — held — no race1860 · Governor Popular Democratic · PopDem — 70.6% National · Nat — 29.4%1862 · Governor Popular Democratic — held — no race1864 · Governor Popular Democratic · PopDem — 61.9% National · Nat — 38.1%1866 · Governor Popular Democratic — held — no race1868 · Governor Popular Democratic — held — no raceSenate · seat 1RadLibPopDem1816 · Senate seat 1 Outside the Union1818 · Senate seat 1 Outside the Union1820 · Senate seat 1 Outside the Union1822 · Senate seat 1 Outside the Union1824 · Senate seat 1 Outside the Union1826 · Senate seat 1 No race1828 · Senate seat 1 Radical · Rad — 34.9% Whig · Whig — 33.2% National · Nat — 23.1% Tory · Tory — 8.9%1830 · Senate seat 1 Radical — held — no race1832 · Senate seat 1 Radical · Rad — 44.6% Whig · Whig — 26.6% National · Nat — 23.7% Tory · Tory — 5.1%1834 · Senate seat 1 Radical — held — no race1836 · Senate seat 1 Liberal · Lib — 57.7% National · Nat — 42.3%1838 · Senate seat 1 Liberal — held — no race1840 · Senate seat 1 Liberal · Lib — 52.6% National · Nat — 47.4%1842 · Senate seat 1 Liberal — held — no race1844 · Senate seat 1 Liberal · Lib — 58.9% National · Nat — 41.1%1846 · Senate seat 1 Liberal — held — no race1848 · Senate seat 1 Liberal · Lib — 54.3% National · Nat — 45.7%1850 · Senate seat 1 Liberal — held — no race1852 · Senate seat 1 Liberal · Lib — 49.6% National · Nat — 44.5% Popular Democratic · PopDem — 5.9%1854 · Senate seat 1 Liberal — held — no race1856 · Senate seat 1 Popular Democratic · PopDem — 38.8% National · Nat — 38.0% Liberal · Lib — 23.2%1858 · Senate seat 1 Popular Democratic — held — no race1860 · Senate seat 1 Popular Democratic · PopDem — 68.2% National · Nat — 31.9%1862 · Senate seat 1 Popular Democratic — held — no race1864 · Senate seat 1 Popular Democratic · PopDem — 64.0% National · Nat — 36.0%1866 · Senate seat 1 Popular Democratic — held — no race1868 · Senate seat 1 Popular Democratic — held — no raceSenate · seat 2WhigLibNatPopDem1816 · Senate seat 2 Outside the Union1818 · Senate seat 2 Outside the Union1820 · Senate seat 2 Outside the Union1822 · Senate seat 2 Outside the Union1824 · Senate seat 2 Outside the Union1826 · Senate seat 2 Admissionist · Adm — 62.6% National · Nat — 28.2% Tory · Tory — 6.8% Republican · Rep — 2.3%1828 · Senate seat 2 Admissionist — held — no race1830 · Senate seat 2 Whig · Whig — 38.1% Radical · Rad — 34.7% National · Nat — 27.2% Tory · Tory — 0.0%1832 · Senate seat 2 Whig — held — no race1834 · Senate seat 2 Whig · Whig — 42.6% Radical · Rad — 29.5% National · Nat — 23.2% Tory · Tory — 4.7%1836 · Senate seat 2 Whig — held — no race1838 · Senate seat 2 Liberal · Lib — 56.8% National · Nat — 43.2%1840 · Senate seat 2 Liberal — held — no race1842 · Senate seat 2 Liberal · Lib — 55.1% National · Nat — 44.9%1844 · Senate seat 2 Liberal — held — no race1846 · Senate seat 2 Liberal · Lib — 51.5% National · Nat — 48.5%1848 · Senate seat 2 Liberal — held — no race1850 · Senate seat 2 National · Nat — 50.2% Liberal · Lib — 49.8%1852 · Senate seat 2 National — held — no race1854 · Senate seat 2 National · Nat — 47.7% Liberal · Lib — 47.4% Popular Democratic · PopDem — 4.9%1856 · Senate seat 2 National — held — no race1858 · Senate seat 2 Popular Democratic · PopDem — 66.1% National · Nat — 33.9%1860 · Senate seat 2 Popular Democratic — held — no race1862 · Senate seat 2 Popular Democratic · PopDem — 52.0% National · Nat — 48.0%1864 · Senate seat 2 Popular Democratic — held — no race1866 · Senate seat 2 Popular Democratic · PopDem — 58.0% National · Nat — 42.0%1868 · Senate seat 2 Popular Democratic — held — no raceHouse delegationLibPopDem1816 · House Outside the Union1818 · House Outside the Union1820 · House Outside the Union1822 · House Outside the Union1824 · House Outside the Union1826 · House Admissionist — 1 seat · 100%1828 · House Whig — 1 seat · 50% Radical — 1 seat · 50%1830 · House Whig — 1 seat · 50% Radical — 1 seat · 50%1832 · House Whig — 1 seat · 33% Radical — 1 seat · 33% National — 1 seat · 33%1834 · House Whig — 1 seat · 33% Radical — 1 seat · 33% National — 1 seat · 33%1836 · House Liberal — 2 seats · 67% National — 1 seat · 33%1838 · House Liberal — 2 seats · 67% National — 1 seat · 33%1840 · House Liberal — 2 seats · 67% National — 1 seat · 33%1842 · House Liberal — 4 seats · 57% National — 3 seats · 43%1844 · House Liberal — 4 seats · 57% National — 3 seats · 43%1846 · House Liberal — 4 seats · 57% National — 3 seats · 43%1848 · House Liberal — 4 seats · 57% National — 3 seats · 43%1850 · House National — 4 seats · 57% Liberal — 3 seats · 43%1852 · House National — 5 seats · 45% Liberal — 5 seats · 45% Popular Democratic — 1 seat · 9%1854 · House National — 5 seats · 45% Liberal — 5 seats · 45% Popular Democratic — 1 seat · 9%1856 · House National — 4 seats · 36% Popular Democratic — 4 seats · 36% Liberal — 3 seats · 27%1858 · House Popular Democratic — 9 seats · 82% National — 2 seats · 18%1860 · House Popular Democratic — 9 seats · 82% National — 2 seats · 18%1862 · House Popular Democratic — 6 seats · 55% National — 5 seats · 45%1864 · House Popular Democratic — 14 seats · 74% National — 5 seats · 26%1866 · House Popular Democratic — 12 seats · 63% National — 7 seats · 37%1868 · House No raceState legislatureLibPopDem1816 · Legislature Outside the Union1818 · Legislature Outside the Union1820 · Legislature Outside the Union1822 · Legislature Outside the Union1824 · Legislature Outside the Union1826 · Legislature Admissionist — 15 seats · 60% National — 7 seats · 28% Tory — 2 seats · 8% Republican — 1 seat · 4%1828 · Legislature Radical — 9 seats · 36% Whig — 8 seats · 32% National — 6 seats · 24% Tory — 2 seats · 8%1830 · Legislature Radical — 10 seats · 40% Whig — 9 seats · 36% National — 6 seats · 24%1832 · Legislature Radical — 11 seats · 44% Whig — 7 seats · 28% National — 6 seats · 24% Tory — 1 seat · 4%1834 · Legislature Whig — 11 seats · 44% Radical — 7 seats · 28% National — 6 seats · 24% Tory — 1 seat · 4%1836 · Legislature Liberal — 14 seats · 56% National — 11 seats · 44%1838 · Legislature Liberal — 14 seats · 56% National — 11 seats · 44%1840 · Legislature Liberal — 13 seats · 52% National — 12 seats · 48%1842 · Legislature Liberal — 14 seats · 56% National — 11 seats · 44%1844 · Legislature Liberal — 15 seats · 60% National — 10 seats · 40%1846 · Legislature Liberal — 13 seats · 52% National — 12 seats · 48%1848 · Legislature Liberal — 14 seats · 56% National — 11 seats · 44%1850 · Legislature National — 13 seats · 52% Liberal — 12 seats · 48%1852 · Legislature Liberal — 12 seats · 48% National — 11 seats · 44% Popular Democratic — 2 seats · 8%1854 · Legislature National — 12 seats · 48% Liberal — 12 seats · 48% Popular Democratic — 1 seat · 4%1856 · Legislature Popular Democratic — 10 seats · 40% National — 9 seats · 36% Liberal — 6 seats · 24%1858 · Legislature Popular Democratic — 17 seats · 68% National — 8 seats · 32%1860 · Legislature Popular Democratic — 17 seats · 68% National — 8 seats · 32%1862 · Legislature Popular Democratic — 13 seats · 52% National — 12 seats · 48%1864 · Legislature Popular Democratic — 16 seats · 64% National — 9 seats · 36%1866 · Legislature Popular Democratic — 15 seats · 60% National — 10 seats · 40%1868 · Legislature No race

Pick a cycle — hover, tap, or tab to one — to post its record: winners, margins, and seats as the results were filed.

  • Radical (Rad)
  • Popular Democratic (PopDem)
  • Admissionist (Adm)
  • Liberal (Lib)
  • Whig (Whig)
  • Republican (Rep)
  • National (Nat)
  • Tory (Tory)

Bars run from the election that won them to the next: an office keeps its last winner's colour until the state votes again, and the gold notches mark those elections. Mid-term party changes — collapses, secessions — left no election record and cannot be drawn.