A preferential attachment model of campaign contributions in state legislative elections

In state legislative elections some candidates attract contributions from many donors whereas other candidates have much smaller donor pools. Why? What are the origins of these disparities? This paper conceptualizes contributions as a type of attachment between the donor and the state legislative candidate. To model the formation of these attachments, this paper proposes a variant of the Barabasi-Albert preferential attachment model. The theoretical model is tested with data on over one million contributions to state legislative candidates in 2008. The paper also derives implications for macro-level inequities across candidates which are tested by comparing the observed inequities to simulations of the preferential attachment model. The results provide strong support for the hypotheses and show that the preferential attachment model provides a parsimonious representation of contributions to state legislative candidates.     

Turnout and presidential coattails in congressional elections

Estimating the impact of turnout on House election results is problematic because of endogeneity and omitted variable bias. The following study proposes an instrumental approach to correct for these problems by using a series of fixed effects two-stage least squares panel-data regression models covering three congressional apportionment cycles (1972–1980; 1982–1990; 1992–2000). The analysis tests whether voter participation decreases the House incumbent’s electoral support, regardless of the level of competition in the district. The study also aims to determine if an increase in participation benefits Democratic candidates and whether this effect is constant across apportionment cycles. The results show that the influence of turnout on incumbency vote share is conditional on the level of presidential support in the district. This finding is explained by the surge and decline thesis of Campbell (1960).     

The 2011 general and presidential elections in Singapore

For the first time in Singapore's history, two elections were held in a year. In 2011, Singaporeans voted in a general election on 7 May and in another competitive presidential election on 27 August. Faced with a stronger opposition force and an emboldened electorate, the ruling People's Action Party won the elections but achieved the worst results since the country's independence.