Ranked-choice voting or RCV is a system that only some states and counties use, but there's a growing push to implement it in wider U.S. elections.

Basalt, Carbondale, and Telluride all use the system while Broomfield and Boulder will begin using ranked-choice voting in November. Fort Collins will implement the system in 2025.

Hart will pilot Microsoft's ElectionGuard in the Verity voting system, which is used in over 500 jurisdictions across 17 states, according to Microsoft. SEE: GDPR: Fines increased by 40% last year ...

Maine will once again use ranked choice voting for federal races in the current election. Here's how the system works, and what supporters and detractors say about it.