A bold agenda of change is vital to beating Donald Trump

Sunday’s Democratic debate between Bernie Sanders and Joe Biden made one thing clear: Sanders may not be winning the most states, but he is winning the message battle of direction and priorities. He represents where most Democrats are — in their hearts and their heads — on the issues. Former Vice President Biden is winning on electability — on the belief that he would be the better candidate to take on President Trump.

Pundits paint Biden as a moderate and Sanders as a radical, but Biden clearly understands that Sanders...