The short answer is Democrats care about governing and the Humboldt electorate appreciates this (imho). During debates Democrats talk about the stuff we need to talk about to decide how best to govern while given the same format, Republicans talk mostly about how to protect what they have and from whom.
You can see this in a brilliant graphic today headlining the NYT website. Below is a snippet of this graph, please visit the site to see the whole thing. What the NYT has done is categorized topics in a word then counted how often that topic was discussed in both Democratic and Republican debates. Then they listed these top down from most discussed (Islamic State) to least discussed (hand size). Then the topic was arranged from left to right with the topics most discussed by Democrats on the left (of course) and visa versa.
Lots of words, just skip all of them and get to the graph here or the snippet below. You’ll get it and it’s absolutely fascinating.
More on the graphic above later, but just for fun, take a look at the following KKKK (Knights of the…) priorities from this well-researched reaction to Jeffrey Lord’s contention that the KKK is a leftist organization and see how these overlap. (I’ve removed the top two (anti-Semitism and racial segregation) b/c I don’t think either of these are part of the GOP agenda, at least not when using mouth words and it could be argued just as easily by those like Jeffrey Lord that either one is a part of the Democratic or Leftist agenda.)
— The quashing of civil rights for minorities
— The destruction of federal government power