FILE - In this Wednesday, May 9, 2018 file photo, Rep. Jeff Denham, R-Calif., left, speaks next to Rep. David Valadao, R-Calif., during a news conference on Capitol Hill in Washington. The Republican incumbents were swept out of office in 2018 after a tally of late-arriving ballots. (AP Photo/Jacquelyn Martin)

FILE - In this April 19, 2018 file photo, Rivko Knox, a volunteer with the League of Women Voters, collects signatures for a campaign financing ballot measure outside a polling station in Glendale, Ariz. A judge on Friday, Aug. 24, 2018 upheld a 2016 Arizona law that bans groups from collecting early mail-in ballots from voters and delivering them. The ruling dismissed a legal challenge to the law filed by Knox. (AP Photo/Anita Snow, File)