Ms Cairns first became a Councillor in 2019
Holly Cairns will be the next leader of the Social Democrats after all the party's other TDs ruled themselves out of any potential leadership contest.
The Cork South-West TD took to Twitter to confirm she would put herself forward and she was "excited" to do so.
Fellow TDs Wicklow's Jennifer Whitmore and Cian O'Callaghan have now ruled themselves out and are backing Ms Cairns.
Dublin Central TD Gary Gannon ruled himself out early last week.
Kildare North TD Catherine Murphy and Róisín Shortall stepped back last week, claiming the time was right to hand the reigns to the next generation.
Ms Cairns will officially take over as leader of the party at noon on Wednesday when nominations close.
She is a first-time TD and became a county councillor in 2019.
Less Than Half Of People Trust The News, Report Reveals
Laws To Limit Short Term Lettings Set To Be Finalised Today
Woman Arrested After €100,000 Drug Seizure In Dublin
Tánaiste Criticises Local Councils For Not Tackling Dereliction
CHI Audit Recommends Stronger Waiting List Governance
Government To Decide If Temporary Fuel Reductions Will Remain In Place
Various Groups Will Lay Out Priorities For Budget Today
Local TD Accepts Data Centres Are A "Particular Issue" In Ireland
