CLEAN : Delegates welcome resignation of Democratic party chair

The transcript discusses the need for leadership change, specifically mentioning Debbie Wasserman Schultz. It emphasizes the importance of a clean and transparent election process, highlighting democracy's sometimes messy nature. The urgency of uniting to prevent Donald Trump from becoming president is stressed, with a call for inclusivity and certainty in the electoral process.

What urgency does Hillary Clinton express regarding unity, according to the speaker?

What potential outcome does the speaker warn about if unity is not achieved?