Party Membership in the United States, II
In spite of the recent loosening of the membership or affiliation requirements in Illinois and a few other states, the general tendency throughout the development of party regulation has been toward greater strictness in this respect, toward more effective protection of the party organization against the independent voter with a careless party conscience. This is indicated, in the first place, by the turn toward an official definition and administration of these membership tests. That is, the parties are no longer left free to determine their own membership rules as they please, but these rules are to an increasing extent prescribed by state law and administered by state officials. Secondly, the tests of party membership have become, on the whole, more complex and more comprehensive, and therefore more difficult to evade—the closed primary has become more and more tightly closed. Thirdly, there has been a drift from the challenge to the enrollment or registration system, and, in general, legislation or other official action which requires greater care by the voter and the candidate in the selection of his party, and which imposes greater difficulty in changing his party affiliation.