A pre-supporter of a bid is someone who contributes an amount in the neighborhood of $20 to the bid committee to help support the bid and especially the bid parties it throws. A successful bit will typical have over a thousand pre-supporters by the time the bid is over.
It is common to give pre-supporters who also voted in site selection a small discount (perhaps $5) on the conversion fee to attending member provided that the conversion is done in the first four or so months after the vote.
|How to Start a Worldcon Bid in 24 Hours or Less|
|This is a conrunning page.|