Question:

Is it permissible in Shariah to accept a woman as the leader and vote for her in the presence of a male candidate who can lead good?

Answer:

It is not permissible in Shariah to accept a woman as a leader or vote for her in the presence of a male candidate who can lead good.

And Allah Subhaanahu wa Ta’aala knows best.
(Hazrat Mufti) Muhammad Taqi Usmani (May Allah preserve him)
Fatawa Usmani Vol.3 Pg.513