multi-candidate primary

Kevin Drum has a rather strange post up about California and Proposition 187. He argues as follows:

Here’s what California has looked like in presidential elections over the past 35 years:

Unless I made a mistake somewhere, Prop 187 had precisely zero effect. As the non-white population of California rose, the Democratic share of the presidential vote rose in almost perfect tandem. After 1994, it continued growing at the same rate as ever.