Inside Biden's battle plan

He is seeking to mark his entrance into the 2020 race with a rush of union support, early-state endorsements and fundraising figures.

Joe Biden has led nearly every Democratic primary poll without doing anything. Now, the former vice president’s team is planning to solidify his front-runner status with a wave of high-profile organizing, fundraising and endorsement news when he enters the race.

Biden’s campaign in waiting has ramped up over the past several weeks — calling donors across the country and tapping decades-old friendships to line up support from major...