The Lesser of Two Evils

When we first looked at radical parties, we made the game easy by considering two-way races. Things become grimmer when we look at three way races. Consider a far left Green, a liberal Democrat and a conservative Republican in a three way race in a liberal district.

The Green candidate takes away votes from the Democrat, making life easier for the Republican. This leads to four possible scenarios:

1. Democrat gets squeezed/Republican wins. This has happened. Without Ralph Nader, Al Gore would have been president in 2000.

2. Democrat moves to the right to make up for lost Green votes. With a bell shaped vote distribution, there are move votes to be won to the right of the Democrat than the left.

3. Green wins. This could happen if the Democrat moves too far to the right, the Green candidate isn’t too radical and the Green candidate has the money, celebrity and volunteers to get the votes the chart above indicates.

4. Democrat returns to her base. If the Republican is sufficiently conservative, the existence of a Green candidate could cause the Democrat to move to the Left to preserve her base.

The first two outcomes are detrimental to the Green cause. The third outcome is unlikely. The fourth outcome is beneficial to the Green cause but detrimental to the Green Party.

The Green Party is small and weak, which means that the third outcome is extremely unlikely. Therefore, the only positive outcome for supporting the Green Party in this scenario is for the Green candidate to be a suicide gadfly to move the Democrat back to the left.

For this reason, most ideological greens (and other leftists/near-socialists) generally stay within the Democratic Party fold. The same goes for other left wing parties. Similarly, most conservatives continue to support the Republican Party, even those who are more ideologically attuned to the Constitution Party. Thus, in actual practice, the third party candidate gets fewer votes than the above diagrams would indicate. People vote not just for the closest candidate ideologically, but also take into account “winnability.”

The “lesser of two evils dilemma” presents the steepest barrier to third party success. This leads us to the third rule for third party politics:

Rule 3: A third party must have a base of voters/activists that is indifferent to the difference between the Democrats and Republicans.

If you don’t see a dime’s worth of difference between the Democrats and Republicans, and you like the Greens, then it is in your interests to support the Green Party. Ditto for the Libertarian or Constitution parties. But who fits this criterion?

Radicals for one!

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Copyright 2007, Carl S. Milsted, Jr. All rights reserved.