The BJP has put the pollution issue at the centre stage of its campaign strategy for the Delhi Assembly polls scheduled to be held in February next year, according to party leaders. Along with this, corruption, bad condition of roads, water supply and poor infrastructure are among the issues with which the opposition party plans to target the ruling Aam Aadmi Party (AAP) in the elections, the BJP's Delhi unit chief Virendra Sachdeva said. Pollution is one of the main poll planks of the party, he said. The city's air quality has been worsening as it edged closer to the severe zone in some areas on Tuesday. The Delhi BJP has been mounting relentless attacks on the AAP over the issue of hazardous air as well as toxic froth witnessed on the Yamuna river. "Not just air pollution, the AAP government's failure to clean the heavily polluted Yamuna in Delhi is another issue that touches every Delhiite. People are falling ill due to worsening air quality. We cannot let the AAP government go