Does Less Income Mean Less Representation?
通过匹配立法者与选民的投票数据，发现低收入选民并未被更差地代表；两党在代表不同收入群体时存在差异，共和党更偏向高收入选民，民主党则相反。
We assemble a novel dataset of matched legislative and constituent votes and demonstrate that less income does not mean less representation. We show: (i) The opinions of high- and low-income voters are highly correlated; the legislator's vote often reflects the desire of both. (ii) What differences in representation by income exist vary by legislator party. Republicans more often vote the will of their higher income over their lower income constituents; Democratic legislators do the reverse. (iii) Differences in representation by income are largely explained by the correlation between constituent income and party affiliation.