Some time ago, economist Steven Landsburg (I think) had a really neat idea that for congressional elections, we should each get two votes -- one for the local office, and one to cast in any other election for similar office. In other words, you'd get one vote to cast in your Senate race, and one to cast in any other contested Senate race for that election. And the same for the House race.
The point of this proposal was to subject porkbarrel masters like the late Sen. Robert Byrd (WV) to the wrath of the rest of the country if they steered too much to their own constituents at the expense of everyone else.
Think of the game theory implications of this proposal! Would the Republicans decide to concentrate all of their firepower on trying to oust, say, Rep. Nancy Pelosi (CA)? Or would they want to spread out their "extra" votes on the most vulnerable Democratic representatives? And would the Democrats retaliate by stacking all their votes against Rep. John Boehner (OH)? Or would they try to protect Pelosi? Given the colossal number of possibilities, I'm pretty sure there would be no Nash equilibrium.
But you know what would make this an even better proposal? (And by better, I mean, more entertaining. . . .) It should incorporate an element from CBS's "Survivor": the immunity idol.
Here's how it would work. After the primary elections are over, when each party's candidates have been determined, the two "tribes" (i.e., Ds and Rs) would "compete" in an immunity challenge of the type used in "Survivor." I would be quite partial to the "eat disgusting food" type, but it might also be entertaining to see congressional representatives slogging through mud while racing to throw balls at targets, or whatever else the producers come up with. The key would be that the list of potential challenges would be put on a giant wheel, and we'd spin the wheel right before the challenge, so as to prevent some kind of advance notice cheating.
Whichever "tribe" wins the immunity idol would then be able to use it to nullify all "extra" votes cast in that representative's district. In other words, for that race alone, only the votes cast by constituents would count. For maximum suspense value, the idol would have to be "played" before election polls close. . . .