For the record, these are the specific topics that count for ideology:
Right
Military: Positive
Freedom and Human Rights
Constitutionalism: Positive
Political Authority
Free Market Economy
Economic Incentives
Protectionism: Negative
Economic Orthodoxy
Welfare State Limitation
National Way of Life: Positive
Traditional Morality: Positive
Law and Order
Civic Mindedness: Positive
Left
Anti-imperialism
Military: Negative
Peace
Internationalism: Positive
Democracy
Market Regulation
Economic Planning'
Protectionism: Positive
Controlled Economy
Nationalization
Welfare State Expansion
Education Expansion
Labour Groups: Positive
For a discussion and explanation of this breakdown, you can read this article
The article linked indicates that the system was designed by researchers from Oxford, building on German and US-American work, the authors of which, however saw many parts of the system quite critical. In any case, database development (but apparently not the rating system itself) has been co-funded by Deutsche Foschungsgesellschaft
As to the "counting topics" above, it is worth mentioning that the final score is calculated as difference of "right" and "left" statements, divided by the sum of all statements, whether left, right, or neutral. This implies in particular that the score moves towards the centre when more "neutral" positions are included in a party's programme.
Germany 1990 is an excellent example for this effect: Out of 152 CDU statements analysed, 20 related to infrastructure, 8 to European integration (not clear whether this is neutral or 'left' internationalism), 20 to environmental protection (cleaning up the GDR mess?), 20 to specific demographic groups (including 6 to farmers), 3 to culture, 3 to Civic Mindedness, and 2 to political corruption (in the East?). In total 76 neutral out of 152 total issues = 50 %.
As to "left" statements, the 1990 CDU programme included:
- Peace 2, Military negative 2 (pretty sure that was in relation to the first Gulf War. In international comparison, you may call it "left", for Germany it was just standard).
- Internationalism 12 (most of which probably relates to the collapse of communism, so it wasn't that "left" as it otherwise may have looked)
- Democracy 2 (and I am pretty sure the sentences began with "Building" and continued with "in East Germany")
- Market regulation 6 (would need to look at it in detail to check whether that relates to transformation in East Germany, or specific regulatory proposals)
- Welfare State Expansion 17 (of course, the whole Western system was to be expanded into East Germany - unemployment protection, pensions, etc.)
- Equality 1 (between East and West?)
- Education Expansion 3
- Labour Groups: 2
So, essentially, a lot of the "left" positions relate to transforming the East German economy. Not the neoliberal way as, e.g., in the Baltics, but with social concern instead. Nevertheless, we are still talking here about a program on transforming a planned economy towards a market economy, and dealing with the collapse of communism, that is getting rated as being "left", while it was, even according to international standards, moderate at best.
Bottom-line: The right-left scale used is, say, a bit antiquated, especially when it comes to infrastructure, environment, civil liberties etc. It is also pretty surprising that "privatisation" does not qualify as "right" topic, or that "Education expansion" is being regarded as leftish.
Whether due to imperfections in the rating system, or sloppy coding, the system has obvious problems to deal with the collapse of the Soviet Union. This is becoming most apparent for Germany, but a leftwards trend is also visible for Ireland 1989 and Australia 1990 (and I guess, we will find more of it on further diagrams that are published for other, especially European countries).