[JakeOfAllTrades]

Replicant Party and Republican party sound the same. It's a pun.

Four More Years! is also funny, because Replicants only have four years to live, and when a political party is seeking re-election supporters cry out "Four More Years!", in reference to a four-year presidential term. Or maybe it was just a Nixon era slogan. I really need to read "Watchmen" again to find out.

But your criticism is noted. I will spruce it up for the final bumper sticker. However, my sense of humor is not recommended for all tastes.