Trello doesn't currently have a feature to automatically sort your cards based on priority—built-in sort features can be activated to sort a specific list by creation date or due date, but not any sort of priority.
One option you might want to look at is Sortello, a third-party product that help you sort your cards.
You’re invited to our first ever Trello User Groups Good news for current and aspiring Trello enthusiasts! We’re launching Trello User Groups so that you can network, share ideas, solve ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG