Photo: ELECTION 2018 REDISTRICTING MONEY | John Arnold testifies before the The Commodity Futures Trading Commission in Washington, D.C. – AP

In this Aug. 5, 2009, file photo, John Arnold, then head of the hedge fund Centaurus Advisors of Houston, testifies before the The Commodity Futures Trading Commission in Washington, D.C. The Action Now Initiative financed by John and Laura Arnold has poured $7.7 million into campaigns to curb partisan gerrymandering, accounting for one out of every four dollars raised by groups backing the ballot measures, according to an analysis by The Associated Press. That’s helped supporters significantly outspend their opponents.