^ The 2002 column refers to the state of parties when 22nd Seanad first met in 2002
^ The May 2007 column refers to the state of parties immediately prior to the 2007 Dáil election
^ The July 2007 column refers to the state of parties when the Seanad reassembled after the 2007 Dáil election, when 14 senators were elected to the 30th Dáil, including 4 senators who had been nominated by the Taoiseach, who were replaced by 4 new nominees.
List of senators
Note: The entries for Senators who were elected or appointed to fill vacancies are shown in italics