“Arizona has a history of problems with guaranteeing the rights of their citizens to vote, and with this lawsuit we hope to stop it now in time for the 2016 general election,” said Marc E. Elias, the elections lawyer for Clinton’s presidential campaign. Elias is bringing the lawsuit on behalf of the Democratic National Committee, the Democratic Senatorial Campaign Committee, the Arizona Democratic Party and several Arizonans. The Clinton campaign will join the lawsuit after it is filed on Friday, according to Democratic officials. Bernie Sanders is also joining the lawsuit, according to one of his senior aides.