Any process that activates or increases the frequency, rate or extent of RNA polymerase II transcriptional preinitiation complex assembly.
Synonyms:
exact_synonym:
positive regulation of RNA polymerase II transcriptional pre-initiation complex assembly; positive regulation of RNA polymerase II transcriptional pre-initiation complex biosynthesis; positive regulation of RNA polymerase II transcriptional preinitiation complex assembly; positive regulation of RNA polymerase II transcriptional preinitiation complex formation; up regulation of RNA polymerase II transcriptional preinitiation complex assembly; upregulation of RNA polymerase II transcriptional preinitiation complex assembly
narrow_synonym:
activation of RNA polymerase II transcriptional preinitiation complex assembly; stimulation of RNA polymerase II transcriptional preinitiation complex assembly