Well I hope this analysis isn't true, the current polarisation has not been good for the US
Also, what does "here to stay" mean? For how long? How positive do you think people were in the 1880s that the current "party system" was there to stay? I'm going to say pretty confident, lol.
The party system in 1880 did last until 1928/1932! That's still a very good run.
No it didn't.
The entire landscape switched with The Panic of 1893 and Rise of Bryan.
In some ways it changed in 1896: but at the same time America went from having Republican Presidents for 28 out of the past 36 years to having...Republican Presidents for the next 28 out of 36 years.
1860 to 1932 was a remarkable run for the Republican party.