Raghav Chadha’s defection to the BJP along with six Rajya Sabha MPs has intensified concerns over AAP’s stability in Delhi, where the party now faces the risk of further MLA defections and shrinking legislative strength. (File Photo) With AAP’s former Rajya Sabha deputy leader Raghav Chadha, along with six of his colleagues in the Upper House crossing over to the BJP on Friday, the biggest challenge for the party in Delhi is keeping its flock together. Insiders apprehended that the fallout of the episode in the Upper House could play out among “five to seven” of its legislators in the city. This becomes a particular concern for the AAP given its current strength in the Delhi Assembly – from a high of 67 in 2015, it currently has 22 MLAs – is six less than when it established a presence in the Capital in 2013. In the 2015 and 2020 polls, the party won 67 and 62 of the 70 seats, respectively. A loss of seven more MLAs could cut the party down to just 15 MLAs.…