O'Callaghan was first elected to Fingal County Council in 2009. He is the Social Democrats spokesperson on energy and climate change. He served as Mayor of Fingal from 2012 to 2013. He has a Masters degree and has studied social policy and healthcare economics. He has campaigned on environment and social issues for the past 20 years.

To challenge the status quo. We need a new generation of TDs to lead the fight against the climate crisis and ensure quality public services.

My top priority for our area is to ensure the necessary investment is made in local infrastructure to build sustainable, safe and cohesive communities that will thrive in the coming years. This means public transport, schools, local facilities and safe cycling infrastructure.

Seriously tackle the housing crisis by introducing legislation to freeze rents, strengthen tenants’ rights and penalise land hoarding, dereliction and speculation which drives up the cost of housing for us all.