When you have summoned the energy to check, you will find that
university constituencies were a Scottish invention, introduced into England and Ireland under the Stuart monarchs.
In the 1918 election, which was a landslide victory for Sinn Fein, Southern Unionists were returned only in two Irish constituencies, Rathmines and University of Dublin. That says little for the intelligence of graduates in that city.
Universities ceased to be represented in the Dail in 1937, [ETA. Please note that "under the Electoral Act 1923 voters registered in a university constituency were not permitted to also vote in a geographical one.", so they had no "extra vote".] but still have two seats in the Seanad, a situation opposed by Socialists and Greens in the Republic.