Complex sentence: Information clearly sounds like it is subject to change (lots of details of a ranked-choice preference system) and/or promotional, and already mentioned in a more reasonably-sized section on the Drexel University article.
Split into simpler sentences: Information clearly sounds like it is subject to change (lots of details of a ranked-choice preference system) and/or promotional. Already mentioned in a more reasonably-sized section on the Drexel University article.