That's not quite correct... There are many differences between religin and ideological platform. 
True, but they share the same fundamental qualities: neither are rational and both are fueled by emotions
Ideology it's just a set of tools, which was designed to resolve some kind of problem or achieve specified goal. A real problem or goal, which could be seen or described. It also required to provide a consistent methodology.
I.e. ideology is required to provide a vectors, something like these:
Goal: how society should work;
Methods: what, how and why should we do to achieve this goal.
Religion is self-sufficient and able to give you an answer for any question. Unlike religion, ideology isn't self-sufficient, it doesn't provide any indisputable answers. Ideology is always based on something which could be proven or refuted.