This article probably ran on the front page of today's Denver Post because it's another case of Republican in-fighting in advance of a likely electoral rout. But it also happens to be a great parties story.
Former Rep. Scott McInnis wanted to run for Colorado's open Senate seat this year but was pressured out of doing so by both state and national Republicans, who had already settled on former Rep. Bob Schaffer for the nomination. The article makes it sound like kind of a personal thing, since Schaffer was once roommates with Sen. John Ensign, chair of the NRSC. But you could also see it as an ideological miscalculation: Schaffer is much more conservative than McInnis,* but the state GOP figured it could get an actual conservative into statewide office this year.
*In the 107th House, Schaffer's 1st dimension NOMINATE score was .849, McInnis' was .495. Those scores run from -1 to +1, with +1 being the most conservative position.