Cnn political power couple John King — ruler of the dynamic data-crunching, touch-screen election map — and Dana Bash have split after less than four years of marriage. A friend of the couple told us: “Dana and John have been separated for the last several months. They continue to co-parent their young son and to work together . . . They ask that their privacy be respected during this difficult time.” They were married in May 2008 in Cape Cod, Mass., and King, who was raised Irish Catholic, converted to Judaism before the wedding (“I’m studying to convert and will consider inviting you to my bar mitzvah,” King told Page Six at the time). We’re told that “Magic Wall” wizard King has no current intention of reconverting. Bash, a CNN senior congressional correspondent, gave birth to their son, Jonah, in June. Now, Bash and King are living in separate homes in Washington, DC. Friends say Bash has appeared on King’s show since the split. A CNN rep said, “We don’t comment on personal matters.”