I disagree with that, although Kobach prefers to believe that was the reason. The truth is that the Republicans were divided more than usual by the particularly nasty primary. Then Kobach went and ran a really bad campaign and catered only to the conservative Republicans. In doing so he turned off the more moderate Republicans, the independents, and the moderate Democrats.
That's my impression too, that the pubbies were very divided and that's how Moore got in. I am close to a couple of Goldwater conservatives in JoCo who for some reason have a bone to pick with Christian conservatives and ended up siding with the moderates in the primary. They didn't vote for the pubbie but won't tell me if they voted for Moore. I think a lot of pubbies stayed home for a couple of elections. Now, Moore is an entrenched incumbent.IMHO the best shot for getting rid of Moore is if he would take on Brownback.