Hey @sooz Ranked Choice was merged into the core plugin a long time ago and should work out of the box.
Note the following caveat: "Ranked choice" polls don't work properly with pie charts - #3 by merefield
Because of this there is no visualisation for Ranked Choice.
If you are self-hosted and interested, you can hire me to create a fork of the latest version of the plugin for you to add Sankey diagrams for Ranked Choice. If that doesn’t matter to you just use what is available in core 