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State of · IL

Illinois

JP

JB Pritzker

Governor

Democrat

State Government 101

How Illinois’s Government Works

Illinois gives its governor an unusually deep veto toolkit — including a rare "amendatory veto" that lets the governor rewrite a bill and send it back — and is one of the few states to split its money duties between a separately elected Comptroller and Treasurer. The full-time legislature has no term limits, and the state Senate runs on an unusual staggered-term cycle.

Governor term
4 years
Governor term limit
None
Legislature
Illinois General Assembly
State Senate
59 seats · 4-yr terms
House of Representatives
118 seats · 2-yr terms
Legislator term limit
None
Sessions
Year-round (two-year session)
Session length
Full-time / no fixed cap
Legislature type
Full-time / professional
Legislator pay
$93,712/yr base + $178/day per diem
Veto override
Three-fifths of each chamber
Line-item veto
Yes (appropriations)

The Executive Branch — Who Runs the State

Illinois has a plural executive with a distinctive twist on money. Voters elect the Governor, the Attorney General, the Secretary of State, and — unusually — two separate financial officers: the Comptroller, who approves and writes the state’s payments, and the Treasurer, who holds and invests the state’s funds. Most states combine those roles; Illinois deliberately split them so that the official who authorizes spending is not the same official who controls the cash.

The Governor and Lieutenant Governor run together as a single ticket, so they always share a party. Apart from the separately elected officers, the Governor appoints the heads of the executive agencies and leads a large professional bureaucracy.

The Legislature — Who Writes the Laws

The Illinois General Assembly is bicameral: a 59-seat State Senate and a 118-seat House of Representatives. It is a full-time, professional body with a base salary of about $93,712 a year plus a per-diem on session days, and there are no term limits — voters have repeatedly declined to add them.

The Senate has an unusual feature. Instead of fixed four-year terms, senators serve on a staggered "2-4-4" cycle within each decade — two four-year terms and one two-year term — so that every senator faces election at least once after each round of redistricting. The House serves ordinary two-year terms.

How a Bill Becomes Law

A bill is introduced, sent to committee, and — if it advances — voted on the floor of each chamber, with differences reconciled before final passage. What makes Illinois unusual is the breadth of the Governor’s veto power. Beyond signing, a straight veto, or a line-item veto on appropriations, the Governor has a reduction veto (to lower a spending figure) and a rare amendatory veto: the Governor can return a bill with specific recommended changes, and the legislature can accept those changes by a simple majority, override by three-fifths, or let the bill die. Few states give the executive this much ability to rewrite legislation after passage.

A veto override takes three-fifths of each chamber. Illinois has only a very narrow citizen initiative: voters can propose changes solely to the structural and procedural parts of the legislative article of the constitution — not ordinary statutes or broad policy — so direct democracy plays a far smaller role here than in states like California or Ohio.

What the Governor Can (and Can’t) Do

The Illinois Governor is strong, especially over legislation. The appointment power covers the heads of the non-elected agencies and many boards; the budget, special sessions, emergency powers, and the clemency power round out the office. What sets Illinois apart is the layered veto toolkit — straight, line-item, reduction, and amendatory — which lets the Governor not just block bills but reshape them: the reduction veto trims a spending figure, and the amendatory veto sends a bill back rewritten for the legislature to accept or override.

The main rival power centers inside the executive branch are the independently elected Comptroller, Treasurer, Attorney General, and Secretary of State — and the split between a Comptroller who authorizes payments and a Treasurer who holds the cash is itself a deliberate check on the Governor’s control of state money.

The Courts

Illinois elects its judges in partisan elections organized by judicial district, then keeps them through nonpartisan retention votes. The Supreme Court of Illinois has seven justices elected from districts and sits at the top, above the Appellate Court and the trial-level Circuit Courts. Mid-term vacancies can be filled by Supreme Court appointment until the next election.

What makes Illinois’s government distinctive

  • A rare "amendatory veto" lets the Governor rewrite a bill and send it back, on top of line-item and reduction vetoes — one of the deepest executive veto toolkits in the country.
  • Money duties are split between a separately elected Comptroller (who pays the bills) and Treasurer (who holds the cash), which most states combine.
  • The State Senate runs on a staggered "2-4-4" term cycle so every senator faces voters after each redistricting.
  • No legislative term limits, in a full-time professional legislature.
  • Direct democracy is sharply limited — citizen initiatives can only touch the structure of the legislative article of the constitution.

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Executive branch

Orders, rulemaking & official actions

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Constitution, statutes & bills

11,465 bills tracked · 104th General Assembly (2025–2026)

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Frequently asked questions

What is an amendatory veto in Illinois?

It is a power, rare among the states, that lets the Illinois governor return a bill with specific recommended changes instead of simply signing or vetoing it. The legislature can then accept the governor’s changes by a simple majority, override by three-fifths, or let the bill die. It effectively lets the governor rewrite legislation after it passes.

Why does Illinois have both a Comptroller and a Treasurer?

Illinois deliberately splits its money duties between two separately elected officials: the Comptroller approves and issues the state’s payments, while the Treasurer holds and invests the state’s funds. Keeping the official who authorizes spending separate from the one who controls the cash is meant to be a check against mismanagement. Most states combine these jobs.

Does the governor of Illinois have term limits?

No. Illinois places no limit on the number of four-year terms a governor may serve.

What is the Illinois Senate’s "2-4-4" term cycle?

Instead of fixed four-year terms, Illinois senators serve two four-year terms and one two-year term during each decade. The two-year term is timed so that every senator must face voters at least once after each round of post-census redistricting, keeping the map and the membership in sync.

Can Illinois voters pass laws by ballot initiative?

Only in a very narrow way. Illinois citizen initiatives can propose changes solely to the structural and procedural parts of the legislative article of the state constitution — not ordinary statutes or general policy — so direct democracy is far more limited than in states like California or Ohio.

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