These are the state-level officials who support RCV in Illinois (as of April 2021):

State Senate: 

• Laura Murphy, 28th District
• Mike Simmons, 7th District
• Scott Bennett, 52nd District
• Robert Peters, 13th District
• Ann Gillespie, 27th District
• Laura Fine, 9th District
• Sara Feigenholtz, 6th District
• Cristina H. Pacione-Zayas
  
  

State House of Representatives: 

• Jaime Andrade, 40th District
  

These are the Chicago officials who support RCV (as of April 2023):

Chicago Alderpersons: 

• Daniel La Spata, 1st Ward
• Lamont Robinson, 4th Ward
• Desmon Yancy, 5th Ward
• Jeanette Taylor, 20th Ward
• Ronnie Mosley, 21st Ward
• Michael Rodriguez, 22nd Ward
• Byron Sigcho-Lopez, 25th Ward
• Jessica Fuentes, 26th Ward
• Ruth Cruz, 30th Ward
• Scott Waguespack, 32nd Ward
• Rossana Rodriguez-Sanchez, 33rd Ward
• Bill Conway, 34th Ward
• Carlos Ramirez-Rosa, 35th Ward
• Gilbert Villegas, 36th Ward
• Andre Vasquez, 40th Ward
• Brendan Reilly, 42nd Ward
• Timmy Knudsen, 43rd Ward
• Angela Clay, 46th Ward
• Matt Martin, 47th Ward
• Leni Manaa-Hoppenworth, 48th Ward
• Maria Hadden, 49th Ward

Chicago Mayor:

Chicago mayor Brandon Johnson is also a supporter of ranked choice voting.