Prime Minister Narendra Modi has promised in his many election meetings to transform Bengal into Sonar Bangla. To understand what this might mean The Telegraph looks for clues in the states where the BJP is already in power, the states that in Modi’s words have a “double-engine sarkar”. Since there can be no better test of governance at this time than the Covid pandemic, this newspaper decided to look at the performance of two BJP-ruled states in handling the surge. The first is Gujarat, which selected itself, not merely because Modi and his home minister Amit Shah hold it up as the model for the country. Gujarat was governed for 13 years by Modi himself as chief minister. He retains a keen interest in the state, and has shown it off to two of his best friends, Donald Trump and Xi Jinping. The BJP has been in power there for more than two decades.