Chicago is scrambling to house hundreds of asylum-seekers who are still sheltering on sidewalks, at police stations and at the city’s busiest airport as the cold weather sets in and with winter just around the corner. The country’s third-largest city announced a partnership with religious leaders this week to house 400 of the migrants in churches. But with nighttime temperatures dropping below freezing and chillier conditions still ahead, more than 1,000 were still living at police stations or at O’Hare International Airport as of Friday. More than 23,000 asylum-seekers have been bused to Chicago from Texas this year, according to the city. Other Democratic-led cities are grappling with similar influxes, including Denver, Houston, Los Angeles and New York.