I leave the intra-RC kerfuffle to you, good people. May the Holy Spirit guide us in all things, and may we remember the "new" commandment Jesus gave us "to love one another, as I have loved you".

In a mainline church which has fractured over many things (and contrary to the religious right not just over women clergy and/or pelvic issues), I've seen the relationship with secular politics change over time. The advance of the "nones" particularly among young people here and abroad, has delinked faith from the most activist persons on the Left. 

The decline in power of the mainline churches allows both sides to marginalize us. If Pew research is right, we're down collectively to 17 percent of Americans. Therefore the idea that there is parallel  "integralism" among mainline and progressive forces with political power equivalent to the RC-Evangelical axis is delusional. It is apples to oranges in terms of impact, money, and power.