He retains the seat previously held by Catherine Murphy
Aidan Farrelly is the second TD to be elected in Kildare North.
The Prosperous based politician benefited greatly from the transfers of Labour's Angela Feeney and made it across the line, with 11,118 votes.
Farrelly was elected to Kildare County Council in 2019 and was re-elected again in June to serve a second term on the Clane-Maynooth MD.
The result means that the Social Democrats retain the seat previously held by retiring TD and party founder Catherine Murphy.

Ireland Lags Behind As Contactless Payments Will Not Be Rolled Out Until 2028
Mother Warns Of Eating Disorder Care Gaps After Losing Her Daughter
Community Groups And Schools To Regain Limited Access To Curragh Swimming Pool
Power Restored To Streetlights In Rathangan After Pre-Christmas Crash Triggered Blackout
Kildare Sports Partnership Allocated Almost €500k, With Specific Portion Dedicated to Women In Sport
Kildare Labour TD Late To Own Dail Motion On Commuter Delays After Being Caught In Traffic
Minister Says Talks With Local Authorities On Childcare Locations Underway As Details Remain Unclear
SIPTU To Meet With Newbridge Silverware Management Following Redundancies At Factory