Reddit reviews The Big Sort: Why the Clustering of Like-Minded American is Tearing Us Apart

No.

First, there is still essentially no space between the most conservative Democrats and the most liberal Republicans. In other words: Joe Manchin is a Democrat, Susan Collins is a Republican, and there is no space between the two. Most aspects of our system (partisan primaries, first past the post voting and congressional mechanics) mean that you are far better off being an outlier in your party than forming your own party.

Sources:
Neutral Rating

[Conservative Rating](http://acuratings.conservative.org/acu-federal-legislative-ratings/?year1=2016&chamber=11&state1=0&sortable=4]

Liberal Rating

Second, the center is smaller than it's ever been. The general public really is divided, with people becoming increasingly polarized. Not only that, but people who vote, volunteer or donate are even more politically partisan than the general public. Finally, those partisan differences are increasingly geographically concentrated which, combined with gerrymandering, means that the median voter for most house districts is well within the bounds of the existing parties.

Sources:

Pew 2014

Pew 2017

The Big Sort (2009)

Finally, both America and Britain had very clearly centrist parties in control in the 90's and early 2000's. Clinton's Democrats/Blair's Labour and Bush's Republican/Cameron's Tories were both much more centrist. All 4 coalitions have essentially been destroyed in the wake of Iraq and the 2008 financial crisis - none were able to prevent the revolt of their partisan base by attracting moderate voters from the other party.

In conclusion, you generally can't create a new party in a two party system, and this is a uniquely bad time to try and do so.