Duplicate a question adds it as the last question. Put it after the one being duplicated
Better still would be to support Ctrl+Drag so it can be placed anywhere in the list of questions
We actually very recently looked into making the Duplicate option put the new question immediately after the original, but it turned out to be much more difficult and prone to bugs than we anticipated. With how important the order polls are listed (to be able to present from the website), we didn’t want to introduce the potential errors this would cause for us. Hopefully, we’ll be able to include this in the future when we come back to improvements to the poll list.
Otherwise, we do have drag-n-drop support for any poll questions you create. You can now click and hold on any poll question → and drag it to the desired location. You can read about this and other changes to our poll list here: https://www.polleverywhere.com/blog/surveys-as-siblings/