Maurya is kept in ICU and is to remain under observation for the day, according to the reports.
Maurya, 48, was admitted to the intensive care unit at Ram Manohar Lohia Hospital.
Maurya, an MP, had attended a BJP parliamentary party meeting in the morning that was addressed by Shah and Prime Minister Narendra Modi. Union home minister Rajnath Singh's son Pankaj Singh, who won with the highest margin, is expected to get a Cabinet berth. The backward caste politician was even then being seen as one of the frontrunners for the chief minister's post. At present he is fully conscious and better. "Mauryaji was not feeling well because of the fatigue of campaigning".
"With all your good wishes and love, I am fine, Maurya tweeted". A senior BJP leader said: "Therefore we need to select someone who will toe the central leadership's line when asked to".
Uttar Pradesh sends 80 MPs to Lok Sabha and is extremely important in the BJP's scheme of things.
While various names are in play, the BJP president is said to be holding parleys with RSS leaders to finalise a name. Earlier, the party's observers for Uttar Pradesh were expected to reach Lucknow on March 15 and the meeting with newly elected MLAs was said to be likely on March 16.