Here are some links to resources on Approval Voting and other alternatives to Choose-one Plurality methods
The Center for Election Science
Approval Voting – Wikipedia
Northwestern University, Kellogg School of Management
Scorevoting.net – Approval
Graphical comparison AV & PV, from Belarus (excellent)
Plurality voting system – Wikipedia
Our Approval voting Bill instructs the Secretary of State to create rules and procedures within two years of passage. Elections supervisors need guidance from the state.
AV4CO seeks additional rules, not a change to existing rules. Counties, cities/towns, and special districts need rules from the Colorado Secretary of State. Home Rule communities may already use Approval Voting without SoS rules, but find them reassuring. Use of Approval Voting is voluntary.