A new opinion poll shows that Senator David Norris is the leading candidate to win next year's Presidential election.

The Millward Brown Lansdowne poll for TV3 shows that Senator Norris has the unprompted backing of 20% of those surveyed.

Fergus Finlay and Michael D Higgins both have 8% support, while Bertie Ahern has 5%, and Miriam O'Callaghan, who has ruled herself out of the race, has 4%.

Four canidates have 2% support - John Bruton, Brian Crowley, Emily O'Reilly and Mariead McGuinness.