“…We chose the control variables based on theoretical justifications and empirical evidence. Changes in social spending can be caused by numerous factors, such as: - an increase in a country's wealth and individual income and consumption may increase the political system's resources to finance social welfare (Lamartina and Zaghini, 2011; Myles and Quadagno, 2002; Wilensky, 1975)
- an increasing electoral competition which may cause opposition and government to back social policy expansion to expand their electoral pool of support to win elections (Altman and Castiglioni, 2020; Ewig, 2016; Garay, 2016; Niedzwiecki and Pribble, 2023)
- the ideological orientation of the party in the executive, precisely thanks to left-of-center parties (Sirén, 2021). Huber and Stephens (2012) found that left political strength is a determinant of the region's social security and health expenditure.
We incorporate four controls 4 in the linear regression analyses to take into account the explanatory effects of the four items mentioned above: Country's wealth (GDP per capita), individual income and consumption (GDP per capita growth), electoral competition (index of effective competition proposed by Altman and Perez-Liñan (2002) 5 , and an additive index to measure the strength of the left combining the orientation of the party of the executive, and the center-left seat share in the lower house (both according to Coppedge's coding rules) (Huber and Stephens, 2014).…”