By Andy SullivanAug 8 (Reuters) – The ideological divide roiling U.S. Democratic politics moves to Hawaii on Saturday, where voters will decide whether to nominate a seasoned lawmaker to another term in Congress or pick a younger, more left-wing candidate. U.S. Representative Ed Case, 73, faces a challenge for the Democratic nomination from Jarrett Keohokalole, 43, a state senator who has argued the incumbent is too close to corporate interests. Case has held the seat since 2019, and also served in the House between 2002 and 2007. If he wins, Keohokalole would be the latest progressive challenger to capitalize on Democratic voters’ frustration with party leaders who they view as too old, too close to Israel, and unable to effectively oppose Republican President Donald Trump. But Case could draw support from independent and Republican voters, who can vote in primary contests in Hawaii.