The BJP leader's rise equally marks a generational shift in the party which is more ready than ever to trust youngsters over veterans.
His elevation follows extensive debate within the RSS on whether to hand over party presidentship to a Gujarati when another Gujarati is head of the Government.
BJP insiders say the decision in favour of Shah was finally taken on grounds that his proximity to Modi would aid better coordination between the Government and the party, further strengthening the saffron surge.
The critics of Shah, who was booked for an alleged hate speech in UP during the poll campaign, is seen by critics as a highly polarizing figure.