[Editor’s note: Seth Masket, a good friend from my days at the University of Denver, has a new book out. He also has this post, about California’s budget politics, for us. Thanks, Seth, for doing this.]

During a difficult economic year in which the state faced a severe budget shortfall, California’s Republican governor worked with Democratic leaders in the state legislature to craft a budget that contained a mixture of tax increases and service cuts. The Republican party stood together on the vote, with the exception of one holdout in the Senate.

Sound familiar? Actually, the year was 1967. Many of the story’s details are familiar because they recur from time to time in California. The real difference, though is the fate of the Republican state senator who refused to vote with his party. Instead of being driven out of politics, John Schmitz was renominated by the Republicans and reelected by his Orange County district the following year. Also, all the other Republicans in the state Senate voted for the budget. Schmitz refused go along with the tax increases that the rest of the Republicans in the senate, and Governor Ronald Reagan, found acceptable.

The situation in California is notably different today. The state legislature still requires a two-thirds vote in both houses to pass budgets, but that rubicon has proven steadily more difficult to cross. Virtually all Republicans will oppose any tax increase; any Republican willing to cross party lines and vote for a Democratic tax will find himself out of work before the next election. This happened after the 2003 budget stalemate; four Republican Assemblymen were dispatched to private life because of their votes in favor of Governor Gray Davis’ tax hike. Notably, none were dispatched in the next general election. None made it that far. Most faced difficult primary challenges from their own party and either lost or decided to retire.

The same thing happened earlier this year when Democratic legislative leaders worked with Gov. Schwarzenegger to produce a compromise package of service cuts and tax increases. The Democrats once again found a few Republicans to cross party lines, and once again those Republicans are being purged from the party. The state party has cut off funds for the six apostates, each of whom now faces a recall petition.

The treatment of these lawmakers sends an unmistakable signal to future lawmakers who would consider crossing party lines: the wrong vote will be your last.

One could blame any of California’s political peculiarities — the two-thirds budget rule, initiatives that have placed much of the budget off limits, term limits, etc. — for the budget stalemates, but the fact is that they wouldn’t occur if the parties were less disciplined. Note what has happened in the parties over the past sixty years. The figure below charts the mean DW-NOMINATE score, which is a measure of roll call liberalism/conservatism, for Democrats and Republicans in the state Assembly:

The parties have moved farther apart, with the Republicans becoming more conservative and the Democrats steadily more liberal. Compromise, which is usually necessary when passing a budget by a two-thirds margin, becomes almost impossible in this environment.

Why are the parties moving apart? (Self-promotion coming.) This is something I explore in my new book. Part of it can be explained by national ideological trends. But part of it is a function of who is running the parties.

California’s political parties are run at the most local level by informal networks of activists, donors, and a few key officeholders. These people work together to pick candidates they like and provide those candidates with endorsements, money, and expertise that can put them over the top in the next primary election, and they deny other candidates these same resources. Because these actors are relatively ideologically extreme, so are the candidates they select. If a politician they put in office strays too far from the principles they hold dear, they can deprive that politician of her job by withholding funding, by running a more principled challenger in the next primary, or, in the most extreme cases, by organizing a recall.

This informal style of organizing parties is not unique to California but fits particularly well there because of state rules limiting the formal parties’ participation in politics. As the informal parties have grown more organized, largely since the 1960s, the legislative parties have moved further apart. While there are still plenty of moderate legislative districts in the state, there are almost no state legislators who could accurately be described as moderate; the penalty for moderation is too high.

Should Californians reject Proposition 1A on May 19th, we’ll no doubt see another round of budget negotiations in the legislature. These will be made difficult by the party operatives on the right (who will punish any Republican who votes for a tax increase) and the party operatives on the left (who will punish any Democrat who votes to eviscerate key social programs). Partisanship makes legislative progress much more challenging, particularly during times of divided government. This is the reason the state keeps coming up with short term methods of financing its deficits and kicking them down the field for a few more years rather than actually addressing its budget shortfalls — given the political climate, it has no other choice.

This is certainly not to suggest that parties are the cause of California’s problems. The state more or less tried bipartisanship in the early 20th century. The result? Corruption. But while strong parties can keep a tab on corruption, they carry their own burdens. They aren’t necessarily the problem, but they can make other problems worse.

x-posted.

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