The two-party system in the US is only viable if the electorate supports it, but I think it’ s too soon for it to break apart on its own unless there’ s a Reagan-esque candidate, or otherwise charisma-filled gent or lady that has the courage to stand as independent or with a lesser party.
There are just too many far left liberals that adhere, out of fear, to central Democrat Party dictates & as many conservatives on the right that don’ t want to be left out in the cold during debates – to constitute a possible coup. An abundance of Republican Party civilians that are proud to be GOP while denouncing the defining leadership as “ rino’s”, is also a factor.
There needs to be an example of actual leadership by a definite conservative, who isn’t going to barrel ahead into war in a ridiculous place or fumble & bumble his sentences; to refurbish the GOP into a right of center party.
Grabbing power in the GOP is the best bet. Somehow.
It’s up to a prospective candidate to do a Scott Walker, now, & get elected. Him, or someone else. However; it’s incumbent upon everyone to remember that people vote for whomever they please & no one is forced to support anyone, in any party.