Going through the motions, the state Congress, which met in Allahabad, formally endorsed the tie-up on Thursday--the first step towards joining hands with the SP in the electoral battle. Modalities of the proposed tie-up are expected to be thrashed out on this weekend, senior Congress leader Digvijay Singh who is also party general secretary in charge for UP asserted on Thursday evening after the state level gathering. The UP Coordination Committee, which was addressed here among others by Rahul Gandhi, was unanimous in supporting the tie-up with the Samajwadi Party, Singh told reporters. He also hinted that the party was open to take along other like minded secular parties, a clear reference to parties like the Ajit Singh led RLD. Singh said Rahul Gandhi has favoured bringing all like-minded secular forces along in order to fight the communal elements but declined to state which other parties it was looking forward to align with.