Who are the runners and riders in the Galway and Dublin by-elections?

Paul Hosford fills in for Mick Clifford to run the rule over the Dublin Central and Galway West by-elections with Louise Burne and Tadgh McNally

Political parties have two by-elections to contest in May.

After last year saw Catherine Connolly elected President and then-finance minister Paschal Donohoe leave Irish politics for a job at the World Bank, political parties will have two by-elections to contest in May.

What are the issues, who are the runners and riders and who can claim the seats?