The number of organizations engaged in religious lobbying in Washington has increased five-fold in the last 40 years, according to a Pew study released this morning, from fewer than 40 in 1970 to more than 200 today.

Nearly one in five of those organizations are either Catholic (19 percent) or evangelical (18 percent), according to the study. The number of Muslim advocacy organizations (17) is nearly the same as the number of mainline Protestant organizations (16).

Read the complete story (Some news sites require registration)