Barack Obama Formally Puts His Support Behind Joe Biden

Former President Barack Obama endorses Joe Biden for President, highlighting Biden's leadership qualities and experience. Obama refrained from endorsing during the Democratic primary to avoid influencing the process. After Bernie Sanders dropped out, Biden became the presumptive nominee, receiving endorsements from both Obama and Sanders. Biden's campaign now benefits from a united Democratic front, with support from various influential figures to challenge President Trump in the upcoming election.

What does the spirit of looking out for one another imply for national governance according to the text?

How did endorsements from prominent figures like Obama and Sanders impact Biden's campaign?