Illinois' forty-fifth state senate district is represented by Republican Senator Brian Stewart.

Illinois state senators represent an average of 217,468 residents. After the 2000 Census, each member represented 210,496 residents.

About the chamber

Members of the Illinois State Senate serve four-year terms and are not subject to term limits. Under the Illinois Constitution of 1970, Senators are divided into three groups. Each group has a two-year term at a different part of the decade between censuses, and the rest of the decade is taken up by two four-year terms. Depending on the election year, roughly one-third, two-thirds, or all of the senate seats may have terms ending.

All three groups hold elections in the first election year following the decennial census and subsequent redistricting (i.e. 1992, 2002, 2012, etc.). Starting with that election, the terms for the three groups are structured as follows:

• Group 1: four-year term, four-year term, two-year term
• Group 2: four-year term, two-year term, four-year term
• Group 3: two-year term, four-year term, four-year term

Illinois legislators assume office the second Wednesday in January.

Qualifications

Article IV of the Illinois Constitution states: "To be eligible to serve as a member of the General Assembly, a person must be a United States citizen, at least 21 years old, and for the two years preceding his election or appointment a resident of the district which he is to represent."

Salaries

Vacancies

If there is a vacancy in the senate, the Illinois Constitution mandates that the seat must be filled by appointment when allowed by law. The appointment must be made within 30 days after the vacancy. If a vacancy by a member of the senate has more than twenty-eight months remaining in the term, the appointment is interim until the next general election and in this case, a special election must be held to fill the balance of the unserved term. All other senate vacancies should be made by appointment with the person appointed being a member of the same political party that last held the seat.

The vacancy must be filled by the respective party organizations covering the legislative district. This must be voted on by the respective committeemen and committeewomen representing the legislative district.

2016 pivot county

This district is one of 710 state legislative districts that intersects with one or more Pivot Counties. These 206 Pivot Counties voted for Donald Trump (R) in 2016 after voting for Barack Obama (D) in 2008 and 2012.

The 206 Pivot Counties are located in 34 states. Iowa, with 31, had the most such counties. The partisan makeup of state legislative districts intersecting with Pivot Counties is slightly more Republican than the overall partisan makeup of state legislatures throughout the country.

Elections

2018

2014

Elections for the Illinois State Senate took place in 2014. A primary election took place on March 18, 2014. The general election was held on November 4, 2014. The signature filing deadline for candidates wishing to run in this election was December 2, 2013. Incumbent Tim Bivins ran unopposed in the Republican primary and was unchallenged in the general election.

2012

Elections for the office of Illinois State Senate consisted of a primary election on March 20, 2012, and a general election on November 6, 2012. The signature filing deadline for candidates wishing to run in this election was December 5, 2011. Incumbent Tim Bivins (R) was unopposed in both the general election and Republican primary.

Illinois State Senate, District 45, General Election, 2012

Campaign contributions

From 2002 to 2014, candidates for Illinois State Senate District 45 raised a total of $3,533,054. Candidates who raised money in contributions earned $353,305 on average. All figures come from Follow the Money.

Campaign contributions, Illinois State Senate District 45