Here’s another thought: Some people are leery of PR because they look at the experience of Israel and Italy, where the multiplicity of parties always makes it necessary, and difficult, to form a stable “coalition government.”
But the “coalition governments” problem only arises in countries that have a parliamentary system, where the legislators must put together a majority to “form a government.” We don’t have that, we have a separation-of-powers system where the president or governor is elected separately and makes his or her own cabinet appointments.
If we had a multiparty political system, I expect legislative “coalitions” would form, but they would be momentary and issue-specific.
E.g., suppose a scenario where the parties represented in Congress are the following:
1. Republican Party – a remnant left after the religious-social conservatives, the libertarians, and the nativistist-isolationist-populists all split off and go their own way. This party would be more purely (and more obviously) the party of established business interests and of agressive foreign-policy neoconservatism. Pro-choice on abortion.
2. America First Party – Pat Buchanan’s new party. It already exists, but if we moved to PR it might find itself augmented by a mass exodus from the Republican Party. Nativist-isolationist-populist, with a solid base in working-class religious people, especially Roman Catholics like Buchanan himself. Socially conservative, against immigration, but also hostile to big business, economic globalization, NAFTA, WTO, and American military adventures abroad. Hostile to the Iraq War, hostile to American support of Israel.
3. Constitution Party – the party of the Religious Right. Already exists, might get bigger. Rooted in Southern Evangelical Protestantism. Agenda would be as it is now – ban abortion, revive school prayer, support vouchers and home schooling, etc. Also would be supportive, for religious reasons, of American support of Israel and military intervention in the Middle East.
4. Libertarian Party – again, still exists, would get bigger. Different from the Republican Party in being pro-market, not pro-business – would deregulate businesses, but also would refuse to bail out foundering corporations or award sweetheart porkbarrel contracts. Also hostile to the national-security state, the military-industrial complex, and foreign military adventuring.
5. Democratic Party – again, a remnant, after several groupings now under the Dem “big tent” go their own way. This party would represent “neoliberalism,” economic globalization, the politics of Clinton and the Democratic Leadership Council. Socially liberal but inclined to ally with the Republicans on business-related issues.
6. Labor Party – a party rooted in working-class people who are more liberal than the America Firsters, but still pretty socially conservative. Centered on the labor unions and devoted to fighting for working-class interests. Would be pro-choice on abortion but with reservations.
7. Green Party – environmentalist, tinged with a concern for “social justice” that differs from most models of socialism in being highly decentralist.
8. Progressive Party – a party for all the real “leftists” in American politics, other than the Greens – communists, socialists, social democrats, radical feminists. Similar to the Labor Party, but different in being more socially liberal. Similar to the Greens, but different in being open to national-level government solutions to problems, and in emphasizing social equality over environmental protection.
9. Independence Party – again, already exists – this and the America First Party are one of two groups that emerged when the Reform Party split. This is the party of John Anderson – and Jesse Ventura, in Minnesota. As with some others, might get bigger if we adopted IRV and PR. It would be “Progressive” in the older, early-20th-century sense of the term – devoted to good government, honest, transparent, vigorous and effective government, but also fiscal responsibility with no deficit spending. Devoted to a technocratic, professional vision of government that purports to transcend ideology, class interests and partisanship – an old Progressive slogan was, “There is no Democratic or Republican way to pave a street.” Would agree with the Libertarians on most social issues.
Now, if we had all these parties in Congress, they might align in different ways on different issues.
E.g., if you introduce legislation to drastically pare down America’s defense spending, the Progressives, the Greens, the Libertarians, and the America First Party all would support it. The Republicans and the Constitution Party would be against it. The Democrats, the Independence Party and the Labor Party might be split.
If you introduced a bill to recognize gay marriage, the Greens, Progressives, Independence Party and Libertarians would be for it. The Constitution Party and the America Firsters would be against it. The Democrats, Republicans, and Labor Party might be split and might push for a compromise solution like “civil unions.”
If you proposed legalizing marijuana, the Republicans might be open to the idea (as presenting new opportunities for the tobacco industry to branch into a new product). The Progressives would require only that the new marijuana industry be properly regulated and taxed. Libertarians, Greens and Independence would support it. The America First and Constitution parties would be against it. Labor might be split.
If you introduced some strict new environmental-protection legislation, the Greens and Progressives would be for it, the Libertarians and the Republicans would be against it, and everybody else would want to carefully study each element of the proposal before making up their minds. E.g., Labor would be environmentalist in principle but they wouldn’t want to do anything that might eliminate jobs.
And so on.
In each case, nothing actually gets done unless a given proposal can muster support from enough different groupings to make up a voting majority.
And if there’s “logrolling” – e.g., the Libertarians agreeing to support Republican proposal X only if the Republicans support decriminalizing pot – what’s wrong with that? We’ve got logrolling now. This change just adds more logs.
While all this is going on, we still have only one president in the White House – a president who probably won on a “fusion” ticket, being the acceptable choice of several different parties who have agreed more or less to work together, at least for this election cycle. Sometimes the president would be a joint choice of the Democrats and Republicans, and would solidly favor globalization and business interests. Sometimes he might be a Labor-America First nominee and always support the interests of the working class. Sometimes he might be an America First-Constitution choice and fight for social conservatism. Or a Green-Progressive-Labor president who would be socially liberal and fight for the working class and environmental protection. But, at any rate, only one president at a time, steering the ship of state in one direction – which direction would be a vector sum, just like now, but involving more vectors than are in play now.