The abstract of this new ELJ article:

Redistricting has been a highly contentious topic in American politics for many decades. The many instances of politicians exploiting the redistricting process to achieve a partisan goal have been widely chronicled. Nonpartisan redistricting plans serve to keep politicians from taking advantage of the process for their own advantage, and they therefore ostensibly serve to increase competition, which in turn improves representation. However, the effect of nonpartisan plans on elections is not entirely clear. I seek to adjudicate competing conclusions about the effect of nonpartisan plans by evaluating the effect of different redistricting methods on quality candidate emergence. I find that, relative to commissions, partisan plans produce fewer quality candidates, more uncontested elections, and fewer open seats.