Mother Jones has a piece asking if Americans can get a fair day in court: "These days, as more candidates for the bench face rough contests—buffeted increasingly by outside money, thanks to the US Supreme Court's 2010 decision in Citizens United—state judges around the country often raise six- and seven-figure sums, mount statewide campaigns, and fend off attack ads from groups that don't disclose their donors. This trend has escalated over the last decade and a half as partisan groups realize that donating to judges can get them more influence, for less money, than bankrolling legislative campaigns."
Mother Jones notes that a Emory University study found that justices who received more money from business interests are more likely to vote in favor of businesses appearing before them and that an analysis by left-leaning think tank Center for American Progress suggested that justices would side with prosecutors when more money was spent on ads suggesting they were soft on crime.