Đúng là Mẽo đảng còn có nick name, thanks cụ.Tên chính thức là Republican Party mà cụ.
Grand Old Party là nickname.
The term "Grand Old Party" is a traditional nickname for the Republican Party and the abbreviation "GOP" is a commonly used designation. The term originated in 1875 in the Congressional Record, referring to the party associated with the successful military defense of the Union as "this gallant old party".
.Republican Party (United States) - Wikipedia
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