The senators served until the close of poll for the 20th Seanad in 1993.

[2] On 22 January 1992, Doherty resigned as Cathaoirleach after comments he made in relation to the phone tapping scandal, which would lead to the resignation of Charles Haughey as taoiseach on 11 February.

[4] Fallon won a contest against Des Hanafin, Tras Honan and Willie Farrell to be the Fianna Fáil nominee for the post.

[5] There are a total of 60 seats in the Seanad: 43 were elected on five vocational panels, 6 were elected from two university constituencies and 11 were nominated by the Taoiseach.

The following table shows the composition by party when the 19th Seanad first met on 1 November 1989.