The problem is most of those states are small and Red. You have to round up alot of left activists to win. Obama was a grassroots organizer earlier in his life so he had some advantage on this. But I agree that an effort should have been made in MN & CO with larger populations. But I bet that Hillary made a calculated decision that there wasnt much bang for the buck in this.

Caucus depend not just on the quantity of the support but also on the Dedication of the support.

The cult of  Obamanation is more extream than the supporters of Hillary.

When your kids say they won't talk to you unless you vote for them having a secret ballot becomes important or your kids get to vote twice...well in many cases anyway.

The Feb 5th caucus states had a lower number of hispanics when compared with Nevada.

She didn't have the money to afford staff offices in multiples states.
seems pretty obvious to me that she just din't have the cash to spend in 22 states.

and also she has a top down organization.

and doyle and penn suck.

Clinton's base of supporters are primarily working class folks like nurses, police men/women, shift workers and single moms who can not afford to skip work for practically the entire day to stand around for caucus. This is why the Nevada caucus worked in their favor when casino shift workers could vote at their places of work.

I would bet that the strategy was that Hillary would win big in the primary states and the caucuses would follow on there own without any organization needed.  Unfortunately, this became more contested than was thought and her campaign never revisited the strategy for caucus states.  It has cost her, we will hope it hasn't cost her too much.