To think that only a short few weeks ago some people were bemoaning a dull presidential campaign, well no more. Each day seems to bring fresh news and some not so fresh candidates. Certainly though the entry of Sinn Féin’s Martin McGuinness into the race has totally transformed the contest and begs questions of the Fianna Fáil strategy and Michéal Martin’s leadership. And what does it mean for the other candidates and for the chances of Senator Norris? We will be hearing from a very interesting guest on all of this - find out more at 22.35.

Also tonight, next month new limits and penalties on drink-driving come into force. Just as hard-hitting campaigns have slowly but surely changed the cultural attitude on drink-driving do the new penalties send a mixed message on road safety? Minister Leo Varadkar is with us.

So do join us, The Frontline, 22.35, RTÉ One.