I have explained this many times.
With the Republican Party, there is currently a singular litmus test for inclusion, and that is the unconditional support and defense of Donald Trump. There is no such litmus test for Democrats. You even had to add an (s) on to ideal - yes, I see what you did there, because there isn't a singular ideal which defines the agenda of the entire Democratic Party itself.
Also, a "cult" will always have a clear and present leader. That leader is usually self-appointed, but not always. This leader has sometimes ascended to their position by way of brute force, intimidation or corruption... and in rare cases, it can also happen by way of democracy - as was the case with Donald Trump and the Republican Party.
These are the most famous cults, and their leaders, with origins in the United States of America over the last 60 years :
The Manson Family .... Charles Manson
The People's Temple .... Reverend Jim Jones
The Branch Davidians .... David Koresh (real name Vernon Howell)
Heaven's Gate .... Marshall Applewhite Jr.
The Church of Scientology .... L. Ron Hubbard (succeeded by David Miscavige)
NXiVM .... Keith Raniere
The Republican Party .... Donald Trump
Can you think of a cult which didn't have a clear and present leader at its forefront? Because I can't.
Who would the leader of this Democratic Party cult even be? And don't say Joe Biden. That's just stupid.