We used to have forum presidents. It was a purely symbolic position, as they had no power or authority.
Unless there is a system in place that allows players to make changes having effects on the game and other players, no-one will care enough to form political parties.
Until then, what we have in KaW is a collection of states and alliances whose limited options of dealing with opponents, consists mainly of diplomacy and the use of force. These are not political parties, but political actors.
The only political parties relevant to KaW, are different groups in a clan or alliance vying for leadership within that clan or alliance. But again, that only works if all members sides agree to be bound by whatever clan rules are in place.