<%@ Register Assembly="Obout.Ajax.UI" Namespace="Obout.Ajax.UI.Poll" TagPrefix="obout" %>

<obout:Poll runat="server" ID="Poll1" DataSourceID="SqlDataSource1" 
     Title="Favorite Movie" Question="What is your favorite movie?" 
     AllowedVotesPerUser="100">
    <ResultStyle DisplayVotes="true" />
</obout:Poll>

protected void Page_load(object sender, EventArgs e)
{   
    Poll1.ResultStyle.FillWithEmptySpace = OboutCheckBox1.Checked;
}