How the printing of ballots could put Democrats on deadline to potentially replace Biden

To avoid potential confusion on the general election ballot, Democrats are limited in the time they have left to decide whether to keep President Joe Biden as the party's nominee or replace him with a new candidate.

Every presidential cycle, both Republicans and Democrats officially choose a candidate to represent their party on the general election ballot based on who receives the most state delegate votes at their national party convention.  

With only one month left until the Democratic National Convention (DNC) in August...