Sen. Kirsten Gillibrand regrets that, as a conservative upstate congresswoman, she backed gun rights and held “callous” views on immigration.

Hawaii Rep. Tulsi Gabbard is sorry for past “offensive and hurtful statements” about the LGBTQ community.

Bernie Sanders is sorry, too — he’s repeatedly apologized the women who were revealed to be sexually mistreated while working on his last campaign for president, before the #MeToo movement.

Even before the 2020 Democratic presidential primary kicks into gear — and ahead of Sanders’ own decision about whether he’ll run again — the contours of the race are being shaped by an apology tour of sorts.