There's no doubt the whole thing was a clusterf*ck. But there doesn't seem to be any evidence that it was either intentional or biased against any one candidate.
Trump announced in June. the rules were changed in August.Why?
http://www.coloradovotesmatter.org/
Friday, April 15 at 3:00PM
The West Steps of the Colorado State Capitol Building
200 E. Colfax Ave. Denver CO, 80203
On April 9th, 3,900 Colorado Republicans voted in a closed convention. We believe that the 34 Colorado national delegates selected that day do not accurately represent us.
We will peacefully assemble outside the Colorado State Capitol Building to make a showing of the vast number of Colorado voters who are not represented by the 34 delegates selected at our recent State Convention.
We will also organize support for future legislative measures to bring the primary election back to Colorado voters.