The survey was sent to staff of the EP, which are involved in assisting the political actors of the EP (e.g. MEPs, political groups, Bureau, Conference of Presidents, etc.). In academic literature these staff are known as legislative or parliamentary staff.

The survey was sent to a total of  2,293 individuals, which were identified through the EP’s website (e.g. directory, committee minutes, etc.) and the websites of political groups. From the total, 431 recipients were employed in the EP’s General Secretariat, 1,437 were accredited parliamentary assistants and 425 were political group advisors. Their respective response rates are shown in the bar chart (click on individual bars to see the legend):