I remember an interview of Rajnath Singh Ji before Lok Sabha Election 2014 results. It was somewhere during the 3rd Phase of Lok Sabha Election 2014. While answering to one question to NDTV reporter. He said that if NDA will form the government, he will not join it. He will be happy to continue as a BJP President. Later, he became Home Minister in Modi Government.
Recently, Rajnath Singh denied that he is in the race of Chief Minister post. but I won’t be surprise if he become Chief Minister of UP. You can watch this clip of one such Interview and Judge yourself.