Formation of BJP:

Bhartiya Janata Party was founded in April 1980, after collapse of Janata Party, which was an all party front created by all parties to fight Indira Congress in 1977.

The first election it fought was in 1984 and it won just two members of parliament.

BJP 2019:

From just two seats in Lok Sabha in 1984 to winning two back-to-back majority in general elections, the BJP now firmly occupies the position of dominance that the Congress once held. The 300+ seats BJP has won in 2019 is the saffron party’s highest ever Lok Sabha tally. It had won 282 seats in 2014. The saffron map of BJP in 2019:

Narendra Modi:

Narendra Modi is the first non-Congress (and third ever) prime minister in India to return to power after a full five-year term.

Voters of BJP:

In at least 21 states and Union Territories, the BJP has the highest vote share making it a truly pan-India party. BJP’s vote share in rural areas was higher (39.5%) than in urban constituencies (33.9%), which means BJP isn’t just a city-based party either.
The BJP won more than 50% votes in 224 of the 446 seats it contested compared to 136 in 2014. Together with its allies, the party won more than 50% of the votes in 15 states and UTs. In 10 states and UTs, the NDA won all the seats.

In the Hindi heartland, the BJP got over half the votes in 141 of the 198 seats it contested. At least 15 of its candidates won with a margin of over 5 lakh votes. BJP’s victories in Chhattisgarh, Rajasthan and Madhya Pradesh come within six months of it losing assembly polls in these states. That’s unprecedented.
The party not only kept its core states – the Hindi heartland, Gujarat and Maharashtra – but also posted its biggest victories in West Bengal, Odisha, Bihar and the northeast. Only Kerala, Tamil Nadu and Andhra Pradesh appeared untouched. Even in Telangana, the BJP won four seats.

In 2014, the BJP had won 171 of 185 seats in UP, MP, Rajasthan, Chhattisgarh, Jharkhand and Gujarat. In 2019, though it won a fewer number of 158 seats in these states, its tally outside these states (which account for 358 seats) went up from 111 in 2014 to 142 this year. The BJP also retained over 80% of the seats it won in 2014.

Modi wave seats:

In 2014, BJP’s vote share had gone up by more than 20% in 104 seats making them ‘Modi wave seats’. In 2019, the party has retained 96 of these, making them ‘double wave’ seats