 Some commentators have argued that the treaty remains essentially incomprehensible in the absence of such a compendium.On 12 March 2008, Libertas, a lobby group started by businessman Declan Ganley launched a campaign called "Facts, not politics" which advocated a No vote in the referendum.A month later, the German Chancellor, Angela Merkel appealed to Irish people to vote Yes in the referendum whilst on a visit to Ireland.