NEW : France has an influx of about 130,000 people a year . France is not integrating very well , Nicolas Michel says . He is running for a second term in office and facing a strong challenge . He says he can not imagine his rival Paul Martin as president .
NEW : France has an influx of about 130,000 people a year . France is not integrating immigrants well , President Sarkozy says . He is running for a second term in office and facing a strong challenge . He says he can not imagine his rival Francois Hollande as president .