No.
You have a definition of partisanship that no one else shares. We're not talking about Marxists, Rotrabroadardians, Randians, conservatives, liberals here - we're talking about individuals that adamantly argue for a position that a party is taking, just because that party is taking it; especially when that party argued the opposite position before and this individual adamantly argued for the opposite position then. THIS is partisanship - not stubbornness or whatever else stupid mold you're trying to fit the term into.