Am having problems positioning a pageBlockTable within a page. I have used the "align" property, but it is being ignored.

Here is a code excerpt:
 

<apex:pageBlock mode="maindetail">

		<apex:pageBlockTable value="{!voters}" var="voter" id="voterTable" align="center">
 
			<apex:column >
				<apex:facet name="header">
					<apex:outputText value="{!$ObjectType.Meeting_Item_Vote__c.fields.Voter_Name__c.label}" />
				</apex:facet>
				<apex:outputField value="{!voter.Attendee__c}" />
			</apex:column>

			<apex:column >
				<apex:facet name="header">
					<apex:outputText value="{!$ObjectType.Meeting_Item_Vote__c.fields.Voter_Name__c.label}" />
				</apex:facet>
				<apex:outputField value="{!voter.Voter_Name__c}" />
			</apex:column>
		
			<apex:column >
				<apex:facet name="header">
					<apex:outputText value="{!$ObjectType.Meeting_Item_Vote__c.fields.Proposed__c.label}" />
				</apex:facet>
				<apex:inputField value="{!voter.Proposed__c}" />
			</apex:column>	
		
			<apex:column >
				<apex:facet name="header">
					<apex:outputText value="{!$ObjectType.Meeting_Item_Vote__c.fields.Seconded__c.label}" />
				</apex:facet>
				<apex:inputField value="{!voter.Seconded__c}" />
			</apex:column>	
		
			<apex:column >
				<apex:facet name="header">
					<apex:outputText value="{!$ObjectType.Meeting_Item_Vote__c.fields.Vote_For__c.label}" />
				</apex:facet>
				<apex:inputField value="{!voter.Vote_For__c}" />
			</apex:column>	
		
			<apex:column >
				<apex:facet name="header">
					<apex:outputText value="{!$ObjectType.Meeting_Item_Vote__c.fields.Vote_Against__c.label}" />
				</apex:facet>
				<apex:inputField value="{!voter.Vote_Against__c}" />
			</apex:column>
		
			<apex:column >
				<apex:facet name="header">
					<apex:outputText value="{!$ObjectType.Meeting_Item_Vote__c.fields.Vote_Abstained__c.label}" />
				</apex:facet>
				<apex:inputField value="{!voter.Vote_Abstained__c}" />
			</apex:column>	
		
			<apex:column >
				<apex:facet name="header">
					<apex:outputText value="{!$ObjectType.Meeting_Item_Vote__c.fields.Vote_Absent__c.label}" />
				</apex:facet>
				<apex:inputField value="{!voter.Vote_Absent__c}" />
			</apex:column>
		
			<apex:column >
				<apex:facet name="header">
					<apex:outputText value="{!$ObjectType.Meeting_Item_Vote__c.fields.Proxy__c.label}" />
				</apex:facet>
				<apex:selectList value="{!voter.Proxy__c}" 
					multiselect="false" 
					size="1" 
					title="Select a proxy"
					rendered="{!voter.Vote_Absent__c}">
					<apex:selectOptions value="{!proxyList}"/>
				</apex:selectList>
			</apex:column>

		</apex:pageBlockTable>

	</apex:pageBlock>

Any ideas?

Ps: This pageBlockTable is within a VF component