http://www.towleroad.com/2012/08/the-republican-party-platform-through-the-years.html#more
“The Republican Party has transformed itself from a moderate, business-oriented mainstream political group into a wealthy-oriented bloc driven by religion, hostile to science and defiant of social progress.”
I’d say that the platform isn’t “unchanging” – it has shifted so far right that it’s come back around the other side.
An illustration of what I’ve been saying: the Republicans took an ill-advised step in cultivating a rabid, crazy base and now that base has shaped the party.