It now looks like the grand saga of the New York state Senate, which involved the chamber coming to a halt as two Democrats flipped control of the chamber by joining up with the Republicans, is now coming to an end. And it has a very amusing denouement.

State Sen. Pedro Espada, a Bronx Democrat who had joined up with the Republicans in exchange for them making him state Senate President, is now returning to the Democratic caucus in a new role -- as Majority Leader! Espada told the New York Post that he has a "handshake deal" to return to the Dems in his new leadership position. His fellow renegade in this whole operation, Queens state Sen. Hiram Monserrate, had previously gone back to the Dems, too.

This is now Espada's fourth party switch in his career. Back in 2002, he'd switched from the Democrats to supporting Republican control, then was defeated for re-election by a Dem. Then last year he returned to the chamber as a Democrat from another district, then embarked on this whole adventure.

As Winston Churchill said of his own switch from the Conservative Party to the Liberals, then later back to the Conservatives: Anyone can rat, but it takes a certain ingenuity to re-rat. And in Sir Winston's defense, his switches took place over the course of 20 years, as various realignments of the British political system were going on. Espada, by contrast, has had the ingenuity to switch and re-switch in the course of weeks, after having already done it before.