(CNN)The first night of the Democratic National Convention is currently expected to bring a message of unity featuring Vermont Sen. Bernie Sanders, former first lady Michelle Obama and former Republican Ohio Gov. John Kasich, according to a source who has seen current convention plans.
The speakers represent a wide political spectrum of support for former Vice President Joe Biden. Sanders is a key leader of the left-wing of the Democratic Party while Kasich ran for the GOP nomination for president in 2016. The former first lady is wildly popular across the Democratic Party.