"I am registered as a Democrat. This was not an easy choice, as for the past four decades I’ve been registered as an independent. The Democratic National Party does not represent my values. Nor does the Republican National Party."

You shouldn't have to declare a political affiliation when registering to vote. Since major party primary elections are subsidized by state taxpayers, any registered voter should be permitted to vote in either political primary provided he/she has not already voted for the same office in a nominating convention.