According to media ratings company Nielsen, Obama was watched by 38.4 million people when he delivered his 2008 address in Denver.
His Charlotte address this week did top the viewership for GOP nominee Mitt Romney’s acceptance speech by over 5 million.
Romney’s figures were also a drop-off from 2008, when the GOP convention pulled in 38.9 million viewers on its closing night.
Obama’s speech capped the best watched night of the 2012 Democratic convention.
Monday’s speeches including an address from first lady Michelle Obama and a keynote from San Antonio Mayor Julian Castro drew 26.2 million viewers. Night two of the convention which spotlighted former President Bill Clinton garnered a 25.1 million audience.