Complex sentence: The public vote category nominees are generally determined by the highest selling releases during the eligibility period, with the final nominees and winner decided by public vote, and in 2010 they replaced the Highest Selling Single and Album awards.
Split into simpler sentences: The public vote category nominees are generally determined by the highest selling releases during the eligibility period, with the final nominees and winner decided by public vote. In 2010 they replaced the Highest Selling Single and Album awards.