During the 2008 presidential election , Barack Obama 's presidential campaign frequently played the song immediately after Obama 's speeches at campaign events . Wonder performed the song live on the final night of the 2008 Democratic National Convention at Invesco Field in Denver , Colorado . During the campaign , Obama 's chief campaign strategist , David Axelrod , used the song as the special ring tone on his cellular phone whenever he received a call from Obama
2008 Democratic National Convention
2008 Democratic National Convention
Signed, Sealed, Delivered I'm Yours