Al-Qassam Brigades & Yahya Sinwar

Al-Qassam Brigades: Declared support for al-Hayya, indicating military wing backing.

Yahya Sinwar: Previous leader killed by Israel in 2024; his death necessitated the election.

Al-Qassam Brigades: The Al-Qassam Brigades, Hamas's armed wing, confirmed the martyrdom of its new chief of staff, Mohammad Odeh, and several of his family members, marking a significant leadership loss for the group.

Yahya Sinwar: Yahya Sinwar, regarded as the mastermind of the October 7, 2023, attack, was previously killed by Israel, underscoring Israel's commitment to targeting those responsible for the attack.

Al-Qassam Brigades: The Al-Qassam Brigades is the armed wing of Hamas, which is believed to resist international calls for disarmament, influencing the decisions of the new Hamas leader. Khalil al-Hayya reportedly has their backing.

Yahya Sinwar: Yahya Sinwar was a former Hamas leader killed by Israeli forces, whose death necessitated the interim leadership committee and the current elections.