[Political Junkie Too]

Anyone who wanted to participate in the Colorado selection process could 

You mean anyone who didn't have to work between 7:30pm - 9:00pm on a Tuesday night, or had to put schoolchildren to bed, or was asleep because they work graveyard shifts, could participate.

-PJ

[Mom MD]

sometimes it takes effort to participate. There were no locks on the doors keeping people out. A lot of states have evening caucuses