I want to know the answer to the following question:
Which two title holders fought for political power in the early 1990s?
All the background I'm provided with is that "A number of the proposals were later adopted in to law in some form, to a small extent during the Keating Labor government, and to a larger extent during the Howard Liberal government (most famously the GST), while unemployment benefits and bulk billing were re-targeted for a time by the Abbott Liberal government.". Is that enough to answer the question?