The party of deregulation cannot base its policy goals on facts, by definition. Because the idea that regulations and government intervention are universally bad and all sectors should be deregulated is a dogma that has been disproven by facts many times. So any party with that ideology goes against facts.

For example, in healthcare, it's more than proven by countless studies that countries that provide universal healthcare not only provide better healthcare by almost any metric, but also spend much less in it than e.g. the US. So anyone that defends the broad idea that government intervention is bad goes against facts, period (as does someone that defends the idea that it's always good, of course - the only position compatible with facts is that some sectors may need more regulation and some may need less, on a case-by-case basis, with some individual cases arguable).