in washington this morning, a strong rebuke from the house speaker on trump failing to denounce the kkk. >> if a person wants to be the nominee of the republican party, there can be no evasion and no games. they must reject any group or cause that is built on bigotry. >> reporter: but trump is still gaining support now at 40%, a tracie potts, nbc news, washington. >> so colorado is one of the 12 states holding democratic caucuses or primaries today. other notable ones include texas, minnesota and virginia. >> now the republican map is similar with a couple of exceptions, namely the fact that colorado will not declare a statewide winner in tonight's caucus. state party officials don't want colorado's delegates to be bound to one particular candidate just yet. knowing that colorado won't select the winner tonight, republican candidates have not really spent much time or money visiting or advertising in our state. c.u. boulder students in one class don't have to decide between caucusing and taking their midterms. that's because their chemistry professor is letting them skip the test if the