Hebrew translation:
Do not vote for collaborators and those who hand over their own brothers!
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The hands on the right side are bound in chains, with the names of the prisons and detention camps where members of the underground movements were held
Acre, Mizra, and Tzrifin; Latrun, Bethlehem, Sudan, Kenya and the Jaffa, Jerusalem and Cairo prisons
This poster was presumably printed before the elections for the first Knesset and was aimed at the Mapai and Mapam political parties whose members were involved in the "saison" ("the hunting season," an operation in which members of the Irgun were handed over to the British)
Source: Kedem Auction House