Andreoni (1993; AER) has shown in an experimental study that crowding-out is incomplete when an involuntary lump-sum tax is levied exogenously on individuals to finance the provision of a public good. In this paper, we (i) replicate Andreoni's experimental conditions, and (ii) introduce a treatment where subjects determine endogenously by voting whether a tax is imposed or not. We find almost complete crowding-out with exogenous taxation. Voting behavior on the tax in the endogenous treatment has high predictive power for voluntary contributions. Subjects voting against the tax free ride more often than those voting for the tax.