pulled off the upset win in pennsylvania and a district trump won handedly in 2016. it's all part of the biden playbook, using working class roots and straight talk to appeal to democrats who turned their back on the party. >> people in my party don't get it anymore. they don't get it. it's about our pride. . it's about our dignity. >> reporter: the looming question -- >> 2020 warmup? >> reporter: will biden be the one to challenge president trump in 2020? >> i have a regret that i am not president because i think there's so much opportunity. >> reporter: biden passed on a third presidential bid in 2016 after his son, beau, died in a battle with cancer. when he's on the stump, straight talk gave way to the well-known propensity for gaffes. his small circle of advisers keep 2020 plans under wraps for now, but sources confirmed they have been going over the what