-Most religious district held by a Democrat - AR-1
-Most religious district that voted for Kerry - MS-2
-Most religious predominately white district held by a Democrat - AR-1
-Most religious predominately white district that voted for Kerry - DE - AL
-Least religious district - WA-7
-Least religious district held by a Republican - WA-8
-Least religious district that voted for Bush - NH-1
In case you're wondering, I'm not using religious self-reference here. In my book the most religious states are Utah, Alabama, Louisiana, Arkansas, etc. No "North Dakota" out of anywhere.
My district, NY-3 may give NH-1 a run for its money in least religious district won by Bush