Mr Koirala, president of the largest party, Nepali Congress, was elected in February 2014. Under his leadership, Nepal successfully promulgated a new constitution.
The party decided to again field Koirala for the post and will register his candidacy today itself.
Chairman of the CPN-UML, K.P. Oli, has already registered his candidacy. Once Koirala also does so, there will be a straight fight for the post.
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