The political party or organization to which you belong or with which you are registered.
In most U.S. states as well as other countries, a person who registers to vote is asked to declare a choice of political party. Thus, there are "registered" Democrats, Republicans, Libertarians, etc., and that is the affiliation. It once was common to issue membership cards to supporters of political parties or organizations. Thus, the term "card-carrying member" of a given party or group.
their political party affiliation
You can change it any time you want.
he has no political affiliation
The Democratic party, which accounts for about 34-36% of American political party affiliation.
Republican Party
their political party affiliation
The "Liberal Party"
affiliation
He is in the Democratic Party.
Repubulican
he was a republican
He was a Republican.
Jimmy Dean followed his own political affiliation.
Minnesota generally is a democrat state.
It is unclear what Brock Lesnar's political affiliation is as he has not publicly stated his party affiliation.
She does not belong to any party, her office is independent of political affiliation.
Republicans