Sen. Bernie Sanders is reasserting himself as the original champion of a progressive agenda many of his fellow 2020 Democratic presidential candidates have adopted.

At a rally of 2,000 in a western Iowa convention center, the Vermont senator jabbed at some of his rivals, saying, “Shock of all shocks, those very same ideas are now supported by candidates — Democratic candidates — for president.”

Prompting roars from the crowd — most of them Nebraskans and ineligible for Iowa’s leadoff caucuses — Sanders ticked through the agenda, leading with “Medicare-for-all,” supported by rivals including Sens. Cory Booker, Kirsten Gillibrand, Kamala Harris and Elizabeth Warren.

Sen. Bernie Sanders, I-Vt, waves to supporters at the conclusion of a rally in Council Bluffs, Iowa, Thursday, March 7, 2019. (AP Photo/Nati Harnik)
Sen. Bernie Sanders, I-Vt, waves to supporters at the conclusion of a rally in Council Bluffs, Iowa, Thursday, March 7, 2019. (AP Photo/Nati Harnik)

That shows how the landscape has shifted since 2016, when Sanders was the lone supporter for such policies as “Medicare-for-all” and the $15 minimum wage.

Sen. Bernie Sanders, I-Vt, speaks at a rally in Council Bluffs, Iowa, Thursday, March 7, 2019. (AP Photo/Nati Harnik)
Sen. Bernie Sanders, I-Vt, speaks at a rally in Council Bluffs, Iowa, Thursday, March 7, 2019. (AP Photo/Nati Harnik)
Cristian Gomez of Lincoln, Neb., right, and Lisa Heineman, who have never met, pose for a photo while wearing Bernie Sanders shirts, ahead of a Sanders rally in Council Bluffs, Iowa, Thursday, March 7, 2019. (AP Photo/Nati Harnik)
Cristian Gomez of Lincoln, Neb., right, and Lisa Heineman, who have never met, pose for a photo while wearing Bernie Sanders shirts, ahead of a Sanders rally in Council Bluffs, Iowa, Thursday, March 7, 2019. (AP Photo/Nati Harnik)
Sen. Bernie Sanders, I-Vt, speaks at a rally in Council Bluffs, Iowa, Thursday, March 7, 2019. (AP Photo/Nati Harnik)
Sen. Bernie Sanders, I-Vt, speaks at a rally in Council Bluffs, Iowa, Thursday, March 7, 2019. (AP Photo/Nati Harnik)
Sen. Bernie Sanders, I-Vt, speaks at a rally in Council Bluffs, Iowa, Thursday, March 7, 2019. (AP Photo/Nati Harnik)
Sen. Bernie Sanders, I-Vt, speaks at a rally in Council Bluffs, Iowa, Thursday, March 7, 2019. (AP Photo/Nati Harnik)