Read posts #7 & 8.
The poll automatically times out based on a setting I enter when posting the poll. I try to adjust the voting period so that it ends on a weekend after a decent period to vote. I try to stay close to 7 days.
"The irony of the Information Age is that it has given new respectability to uninformed opinion." - John Lawton, speaking to the American Association of Broadcast Journalists in 1995