On one side, a hope-and-change machine started up, despite signs of sputtering, stuttering, and stalling out from time to time. But, it always responded well to CPR, then would get right back on track, going down the center of the road.
On the other side, a blockade machine was built. It swerved hard right all the time, otherwise working flawlessly, halting all forward progress with random exclamations of "NO!" and "One term only or else!" and "Over our dead body!"
That was four years ago. Feels more like forty.
Both machines had constant tinkering as they rattled and wheezed along. The blockade machine worked out better than hoped: Its sworn mission was to stop everything cold until it could be in the lead. It most always did.