Nebraska Democrats have voted to reject the influence of superdelegates on the party's presidential nominating process.
A resolution approved Sunday at the party's statewide convention in Kearney urges current superdelegates to base their votes at next month's Democratic National Convention on the results of Nebraska's March 5 presidential caucus.
The nonbinding measure also abolishes the Nebraska party from sending superdelegates to future national conventions "without substantial change" to the process.
Just one of Nebraska's five superdelegates -- party leaders whose national convention votes aren't pledged based on state election results -- has publicly committed her support to Vermont Sen. Bernie Sanders despite his victory over former Secretary of State Hillary Clinton in the state's Democratic caucus March 5.
"That's a problem," said Scott Williams, a 34-year-old university professor from Omaha who helped craft the resolution. "We are looking for proportional representation."
Sanders supporters nationwide have decried the superdelegate process, and Democrats in at least two other states, Alaska and Maine, have passed similar measures in recent months.
The Nebraska Democratic Party also voted Sunday to condemn degrading remarks against women, minorities and other people by elected officeholders and party officials.
State Republicans chose not to vote on a similar resolution during their convention in Omaha last month, because many considered it a "poison pill" aimed at Donald Trump, the party's presumptive presidential nominee.
The Democrats' moves came on the third day of their state convention at Kearney's Ramada hotel.
On Saturday, the delegation elected firebrand anti-pipeline activist Jane Kleeb as the party's state chairwoman.
Kleeb, a Sanders supporter, harnessed the same anti-establishment furor that led to Sunday's superdelegate resolution and allowed Sanders to emerge victorious from the state caucus.
By passing the resolution, Kleeb tweeted that Nebraska Democrats "punched above our weight" and took on the national party.
"This is definitely the Nebraska Democratic party asserting our voice on the national stage," Williams said.
Many stalwart Democrats opposed the superdelegate resolution, however.
An attempt to force an early vote on the resolution Saturday failed to gain the necessary two-thirds support from 410 delegates who were eligible to vote.