Most recent update was 24 a month on the ERJ and 20 on the CRJ side. ERJ basing is currently EWR, CLE, IAH, and ORD. Starting in Fall, IAD, MCI, and DEN will be opening for the ERJ. Right now EWR is what the most junior person can hold. Starting in Fall it looks like it might MCI. With seven bases and a complete reshuffle of pilots between the new ones, it's very tough to say where you'd end up. But I can guarantee it won't be DEN. Regardless, most new hires have been able to hold the base they want within a few months even if they don't get it right away.