Enables DNA-binding transcription activator activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Involved in mammary gland involution and positive regulation of transcription by RNA polymerase II. Acts upstream of or within several processes, including blastocyst development; extracellular matrix organization; and regulation of transcription, DNA-templated. Predicted to be located in Golgi apparatus; cytosol; and nucleoplasm. Predicted to be active in nucleus. Is expressed in several structures, including alimentary system; central nervous system; early conceptus; eye; and genitourinary system. Orthologous to human ELF3 (E74 like ETS transcription factor 3). [provided by Alliance of Genome Resources, Apr 2022]