Tēvzemei un Brīvībai/LNNK
In July 2006, TB/LNNK nominated Zīle as a candidate for the position of Prime Minister. In December 2006, he was elected chairman of TB/LNNK. In July 2011, upon the creation of the new association of political parties National Alliance "All for Latvia!" - "For Fatherland and Freedom/LNNK", Zīle became co-chairman of the association from the TB/LNNK side. In August 2011, he resigned his post as co-chairman, declaring that he wishes to focus his attention on the events in the European Parliament and believes that the leaders of the National Alliance should be based in Latvia.