How ranked-choice voting works in states like Maine

Here in Maine, federal elections will be decided by ranked-choice voting. Not sure how it works? Here's a quick explainer.

[jewels]

Why was it changed ? & why isn't it across all states?

[OdinsRavenwood]

Stood in line for a few hours today in Sanford! Well worth the wait ! The blue wall was huge 💙 🌊🩵💙🌊🩵👍🏿