Should presidential campaign promises be enforceable?

[Money2Burn]

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Technically speaking, promises are not contracts. Consideration ( or something of value ) has to be exchanged for a contract, verbal or written, to be enforceable.

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What about votes? If I vote for politician A because he promises X (or an attempt to enact X) from my pov I am giving him my vote in exchange for his specific actions.

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Wouldn't you have to be able to prove you voted for him?