The big picture: Biden led with 84% of the vote, according to preliminary results, and the Associated Press declared him the winner four minutes after polls closed at 7pm.
The intrigue: A hastily organized campaign to vote "noncommitted" in protest for Biden's support for Israel only netted about 7%.
Led by the Colorado Palestine Coalition and local Democratic Socialists of America, the effort came together late Wednesday with far less organization than a similar campaign in Michigan.
What they're saying: Boulder resident Susan Flake, a registered Democrat, told the Denver Gazette she voted for Biden.
"I'm not wild about the choices, Biden included, but I just don't want Trump," she said. "I just had to not vote for Trump. Anyone but him."
Zoom out: Biden dominated Super Tuesday with wins in most of the states who held primary contests.
What to watch: The primary vote apportions delegates to the Democratic National Convention, but how many Biden will take from the 87 available in Colorado won't be finalized until later this week.