Bersatu information chief Wan Saiful Wan Jan has dared Umno to use its president Ahmad Zahid Hamidi as a "poster boy" in the Johor state election.

"If you are cowards and don't dare to name Zahid, then don't keep harping on our Bersatu president.

"We are confirmed on inviting Muhyiddin (to campaign in Johor) and respectfully use him as our poster boy. If you (Umno) dare, then plaster Zahid's face at every corner of Johor. Do you dare or not?" he challenged Umno.