Electoral district magnitude varies across German electoral constituencies and over legislative periods due to Germany's electoral system. The number of seats in parliament per constituency is effectively random. This setting permits us to investigate exogenous variations in district magnitude on federal resource allocation. We analyse the effect of having more than one federal legislator per constituency on federal government resources by exploiting information from 1,375 German constituencies from 1998 to 2017. More federal legislators per constituency lead to statistically significantly more employment of federal civil servants in the respective constituencies. The size of the effect corresponds to about 37 additional federal civil servants (3.4% of average employment) once a constituency is represented by additional legislators from party lists. Numerous robustness tests support our results. Further evidence points to some heterogeneity of the effect. In particular, constituencies represented by additional legislators who are experienced and who are members of larger, competing parties obtain more federal resources.

We analyze the impact of elected competitors from the same constituency on legislative shirking in the German Bundestag from 1953 to 2017. The German electoral system ensures at least one federal legislator per constituency with a varying number of elected competitors between zero to four from the same constituency. We exploit the exogenous variation in elected competitors by investigating changes in competition induced by legislators who leave parliament during the legislative period and their respective replacement candidates in an instrumental variables setting with legislator fixed effects. The existence of elected competitors from the same constituency reduces absentee rates in roll-call votes by about 6.1 percentage points, which corresponds to almost half of the mean absentee rate in our sample. The effect is robust to the inclusion of other measures of political competition.

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We analyze the effect of electoral turnout on incumbency advantages by exploring mayoral elections in the German state of Bavaria. Mayors are elected by majority rule in two‐round (runoff) elections. Between the first and second ballot of the mayoral election in March 2020, the state government announced an official state of emergency. In the second ballot, voting in person was prohibited and only postal voting was possible. To construct an instrument for electoral turnout, we use a difference‐in‐differences strategy by contrasting turnout in the first and second ballot in 2020 with the first and second ballots from previous elections. We use this instrument to analyze the causal effect of turnout on incumbent vote shares. A 10‐percentage point increase in turnout leads to a statistically robust 3.4 percentage point higher vote share for incumbent mayors highlighting the relevance of turnout‐related incumbency advantages.