The idea that a few independent centrists in the US Senate could block the worst hyper-partisan legislation is a great medium-term goal, and should work sometimes. Ultimately though, we need more than just a few votes - especially if we want it to do more than just stonewall the worst legislation or be a 'caucus of no'.
The Centrist Fulcrum Strategy - Our Medium Term Goal
I'd heard of the concept now called the 'fulcrum strategy' before, but Charles Wheelan's book 'The Centrist Manifesto', subsequent writing and media appearances, as well as The Centrist Project (dark money group that supports independents running for office) organization he launched have definitely done more to convince people of its merits than everyone else put together (and then some).
There is nothing faulty about the concept itself, and the core concept it sound. A few centrist votes in the US Senate could block either side from a majority, block them from pushing throu...