Important information has emerged about the explicit views of Rav Chaim Kanievsky zt”l and Rav Gershon Edelstein zt”l regarding voting in the WZO elections.
You can vote by following the instructions at the Eretz HaKodesh website (click here).
Five years ago, Rav Shmuel Kamenetsky shlit”a sent a letter to Rav Chaim Kanievsky zt”l to clarify his view on voting in the WZO elections. Rav Chaim replied that it is proper to vote. Here is the letter typed out. The Yeshiva World has the handwritten letter and an English translation:

Click here for the article about Rav Chaim Kanievsky
Matzav.com published an audio with subtitles of Rav Gershon Edelstein encouraging Americans to vote for Eretz HaKodesh in the WZO elections.
Click here to listen to the audio of Rav Gershon Edelstein
You can vote by following the instructions at the Eretz HaKodesh website (click here).

