390 of its 580 returns name at least one TD or Senator; 208 different members are named in all.
- Colm BurkeFGFine Gael TD · Cork North-Central83 returns19 in the last 12 months
- Simon HarrisFGFine Gael TD · Wicklow80 returns5 in the last 12 months
- David CullinaneSFSinn Féin TD · Waterford77 returns11 in the last 12 months
- Louise O'ReillySFSinn Féin TD · Dublin Fingal West67 returns2 in the last 12 months
- Johnny GuirkeSFSinn Féin TD · Meath West54 returns6 in the last 12 months
- Catherine ArdaghFFFianna Fáil TD · Dublin South-Central51 returns8 in the last 12 months
- Erin McGreehanFFFianna Fáil TD · Louth47 returns13 in the last 12 months
- Alan KellyLABLabour Party TD · Tipperary North46 returns1 in the last 12 months
Counts are returns published on the Register of Lobbying that name the member, up to 28 Sept 2026; the last 12 months run from 29 Sept 2025. A return names a member when the lobbyist reports contacting them. It says who was lobbied, not what was asked or what they did. Only officials described as a TD, Senator or Minister whose name matches exactly one member are counted, so every figure is a minimum. How records are linked