Texas Sen. [crscore]Ted Cruz[/crscore] scooped up three more delegates in Colorado Thursday night. Voters at the Broadmoor World Arena in Colorado Springs chose Anil Mathai, George Athanasopoulos and Libby Szabo to represent the state’s Seventh Congressional District at the Republican National Convention.

All three were part of a proposed roster, or “slate,” of delegates the Cruz campaign wanted to send to Cleveland in July. All three are expected to vote for Cruz on the first ballot there. Three additional people from the district were chosen as alternate delegates.

Cruz now has swept the Colorado GOP convention so far with nine delegates. The Texas senator picked up six delegates on Monday. The convention continues on Friday when 12 more delegates will be elected. It is scheduled to close on Saturday after 13 delegates are chosen.

The Trump camp appears to be struggling to capture delegates at the convention, partly because Cruz operatives have been working for eight months.

According to NBC’s Alexandra Jaffe, after a pro-trump delegate spoke to convention-goers, attendees responded, “Dump Trump!” and “Trump’s a Democrat.”

Alan Cobb, a Trump delegate organizer in Colorado, told NBC, “If we get a delegate number higher than zero, it will be a success.”

Trump CO director Patrick Davis explains why 2/3 of Trump delegate slate not on ballot. One didn’t pay fee, other unsure but assume similar. — Benjy Sarlin (@BenjySarlin) April 8, 2016

Additionally, Trump’s Colorado state director Patrick Davis, who was hired days before the convention after the campaign fired its last state director, told MSNBC that two-thirds of Trump’s delegate slate did not make the ballot because the one of the Trump delegates failed to pay a ballot fee.

Follow Kerry on Twitter