The dramatic change in party identification is uncommon and is historically always a consequence of a Major Upheaval.
What is an Upheaval?
Upheaval is a sudden change or disruption in the proccess of something. Upheaval can be violent and can lead to a major disaster in the community.
Historically, when individuals or groups dramatically change their party or position in their party identification, it always leads to a major upheaval in the party.
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