How to sort a dynamic picklist

Question

I have a visualforce page where I am displaying dynamic picklist

Visualforce code:

<apex:selectList value="{!SelectedNomination}" size="1" id="a">
   <apex:selectOptions value="{!contactlist}"></apex:selectOptions>
</apex:selectList>

Apex Code:

public List<Nominator__c> Nominators = new List<Nominator__c>();

public List<SelectOption> contactlist
{

    get
    {

        String state = 
             application.Congressional_State_Territory__c.substring(0,2);

        Nominators = [Select Id, Name, Class_Year__c, Contact_Name__c, 
              Nominator_Code__c, Nominator_Type__c from Nominator__c WHERE 
              FirstTwoLetters__c =: state and Nominator_Type__c= 
              'Congressional - House' and Class_Year__c =: 
              application.Class_Year__c and Status__c =:'Active' ];

        contactlist = new List<SelectOption>();

        for(Nominator__c nom : Nominators)
        {
            contactlist.add(new SelectOption(nom.Id, nom.Name + ' ' + 
            nom.Contact_Name__c));
        }

        **contactlist.sort();**
        return contactlist;
    }
    set {}
} 

The data in my picklists are as "Florida District 01 Peter Scott" , "Florida District 02 Bob Stu", District 03 Matt Cauller", ..... goes onto Distrcit 14.

I have used the sort function above before displaying the picklist. It displays all other values in correct order except District 01 and 14. Their position is reversed.How do I make them display in their correct position. This is how it displays

Florida District 14 .........."

Florida District 02 .........."

................03...........

................04..........

...............05........

...............06.......

...............07......

.........................

.........................

Florida District 01 .........."

Answer 1

Since you are creating the List based on query, so better to use ORDER BY clause for sorting. Here is an example.

Nominators = [Select Id, Name, Class_Year__c, Contact_Name__c, 
              Nominator_Code__c, Nominator_Type__c 
              from Nominator__c 
              WHERE 
              FirstTwoLetters__c =: state 
              and Nominator_Type__c= 'Congressional - House' 
              and Class_Year__c =: application.Class_Year__c 
              and Status__c =:'Active' 
              ORDER BY Name ASC] ;

Verify, whether you need to use ASC or DESC