Sinn Féin's Imelda Munster has announced she will not contest the next general election.
The TD for Louth and East Meath was the first woman ever elected in the constituency.
She said she will continue to work for the people of the North East until this Dáil term ends.
Ms Munster was first elected to the Dáil in 2016, and said this was always her plan.
In a statement, she said: “It has been my honour and privilege to represent the people of my hometown Drogheda and Co Louth in the Dáil since 2016, and I look forward to continuing to do so for the remainder of this Dáil term.
“I entered politics because I love Drogheda and I wanted to work for my community. I have always done my best to be a strong Republican voice on behalf of the people of Drogheda. I am proud to have been able to represent the town and the wider constituency for the past twenty years.
"I will always reflect fondly on the fact that I was the first woman ever elected to this constituency. I also made history by receiving the highest vote of any TD ever elected here."
She added: “It may sound like a political cliché, but I truly and genuinely mean it when I say that the proudest day of my life was the day I was chosen by the people of this constituency to be their representative and to work on their behalf.
“From the very first day I was elected I’ve had the people of Drogheda to the fore of my mind, whether it was on Louth County Council or in Dáil Éireann.
“I’ve spent my time as a representative raising issues for our town and county, and fighting the corner of those I’ve been so proud to represent."
