The ad, a compilation of Bush moments on the campaign trail, says, "We need to focus on the things that tie us together, and whether it's Donald Trump or Barack Obama, their rhetoric of divisiveness is wrong."
Bush presents himself as a contrast, saying, "I campaign embracing diversity. Come join us - come join the team that is creating hope and opportunity."
And, he continues, "A Republican will never win by striking fear into people's hearts."
Bush has criticized Trump on the campaign trail, notably over Trump's remarks about Mexican immigrants, which he called "extraordinarily ugly." Trump, for his part, has claimed he doesn't see Bush as "a factor" in the race.