“…Incumbents often build themselves a self-image of being a safer bet than challengers (Bernhardt and Ingberman, 1985) and they mostly enjoy positive free media exposure of their actions, speaking and writing vs. challengers who must buy and organize exposure of their own actions (Caselli et al, 2014). Incumbents raise funds more easily and have better access to other campaign resources (Cox and Katz, 1996;Jacobson, 2006;Cole et al, 2016;Bohn, 2019); they can use "Pork Barrel" politics, favoring specific categories of supporters (Ansolabehere et al, 2006;DeBacker, 2011); they can better conceal irresponsible deeds/decisions as state secrets and convince voters of their morality and credibility by referring to their seniority and past successes while using advantageous knowledge due to their access to classified information (Fiorina, 1989;McKelvey and Riezman, 1992;Cox and Katz, 1996;Druckman et al, 2020); they advance their own policies while deterring/barring challengers' alternatives (Aragones and Santiago, 2016); their successes or assumed ones enhance their image of having superior personal qualities, which deters strong talented challengers from competing with them (Levitt and Wolfram, 1997;Stone et al, 2004), and thus face weaker challengers than those faced in the competition for open offices (Gowrisankaran et al, 2008;Jalali, 2012).…”