Chairperson of the Social Democrats Joe O'Connor has told the party think-in that up to 90 candidates are expected to run in the local elections.
It will be the first local election that the party will contest, with the aim to have a candidate in every local authority in the country.
The number of candidates selected so far is 17 (ten women and seven men).
The party has said it will field candidates in "the majority of constituencies" in the next General Election.
The number of General Election candidates selected to date is 21 (eight men and 13 women).
It contested 14 constituencies in the 2016 General Election.
The party think-in in Dublin had the theme of affordable living, particularly in relation to housing, education and childcare.
The party's co-leader Róisín Shortall told members that people should be able to live quality lives with a good standard of living.
In her opening address she said the Government had failed to invest in public services.
Ms Shortall also criticised the Government over the lack of affordable housing.
She said the costs needed to be driven down relative to incomes and the Government is not willing to take on the issue of land prices.
She said land-hoarding taxes needed to be introduced.
Speaking to the media, Ms Shortall described as "auction politics" the Budget 2019 discussions between Fianna Fáil and Fine Gael.
The party's other co-leader, Catherine Murphy, was absent from today's think in following a knee operation.