Next week's Democratic National Convention will feature a lineup of heavyweight politicians, rising stars and everyday Americans making the case for why Joe Biden should be elected U.S.

Bernie Sanders, a prominent liberal who fought the centrist Biden for the Democratic nomination, and Republican former Ohio Gov.

John Kasich, a two-time presidential candidate, will tell voters why they both support Biden as an alternative to Republican President Donald Trump.

Representative Alexandria Ocasio-Cortez of New York, a leading progressive voice who vexes conservatives and represents a younger generation of voters often at odds with Biden's policy positions, is scheduled to speak at the convention on Aug.

In addition to Sanders, the convention will feature several more of Biden's former rivals in the Democratic primary, including Pete Buttigieg, the former South Bend, Ind., mayor who has become a prolific fundraiser for Biden's White House bid.

Biden has vowed to pick a woman as his running mate, and several of the candidates considered for his No.

WATCH l Stakes are high for Biden in choosing running mate:.

Senators Amy Klobuchar and Catherine Cortez Masto, who were on the running mate list until they withdrew their names from the process, will speak as well.

Rep. Lisa Blunt Rochester, who helped run the unusually public vetting process for Biden's running mate, and Biden's wife, Jill, who privately weighed in on the selection, also are on the list.

Former president Barack Obama, whom Biden served under as vice-president for eight years, will have a high-profile speaking role on Aug.

19, the night after former president Bill Clinton speaks.