“After proving to be a thorn in the side of the Democratic caucus by refusing to eliminate the filibuster, holding up key Democratic priorities, and insisting on trimming down Democratic spending bills, Senator Sinema announced that she will switch her party affiliation from Democratic to Independent… In a closely-divided state like Arizona, an Independent like Sinema running could siphon votes away from the Democratic candidate, allowing Republicans to capture a Senate seat, possibly give them a Senate majority.”