(CNN) With Joe Biden's announcement seemingly imminent, the Democratic primary is about to finally hit full steam. For weeks, the polls have suggested a potential two-person race between the two septuagenarians, Biden and Bernie Sanders, with Biden looking more likely to triumph. Biden cannot expect a coronation; he will have to work for the crown. And Sanders shouldn't be so sure that if Biden fades, he'll be the beneficiary. Sanders, who is closest to Biden in the polls, remains an often-witty debater who never wavers from his message about democratic socialism.

Source: CNN April 24, 2019 12:00 UTC