FORT WORTH, Texas -- Liz Runnion already plans to cast her ballot for Bernie Sanders in the 2020 Democratic primary election.
Like many gathered Thursday at Sanders' downtown Fort Worth rally, she hopes the 77-year-old will win the party's nomination and go head-to-head with Republican President Donald Trump.
But if he doesn't, Runnion said she hopes Sanders supporters will back the Democrat who wins the party's nomination and put the "Bernie or Bust" mindset to rest.
"They are shooting us in the foot," she said. "If we want to defeat Trump, which they all seem to want to do, why defeat yourself?"
Sanders, who lost the Democratic Party's presidential nomination in 2016 to Hillary Clinton, on Thursday promoted a political revolution that could take him to the White House on the same day former Vice President Joe Biden said he's also running for president.
"Reach out to friends, neighbors, coworkers," Sanders told the crowd. "Explain to them that they do not have the luxury of not participating in the political process.
"If they want real change ... they've got to stand up and fight back."
As Sanders spoke to the crowd, one man stood on a nearby sidewalk booing him and chanting "Trump, Trump, Trump."
As for Biden's candidacy, Sanders told the media after the rally that he believes Democrats will unite in 2020 behind the party's nominee -- no matter who it is -- to make a difference.
"We are going to see Democrats come together to defeat the most dangerous president ... which is President Trump."