The seats of the senators of the first class shall be vacated at the expiration of the second year , of the second class at the expiration of the fourth year , and of the third class at the expiration of the sixth year , so that one - third may be chosen every second year ; and if vacancies happen by resignation , or otherwise , during the recess of the legislature of any state , the executive thereof may make temporary appointments until the next meeting of the legislature , which shall then fill such vacancies 第一组参议员席位在第二年年终空出，第二组参议员席位在第四年年终空出，第三组参议员席位在第六年年终空出，以便三分之一的参议员得每二年改选一次。在任何一州州议会休会期间，如因辞职或其它原因而出现缺额时，该州行政长官在州议会下次集会填补此项缺额前，得任命临时参议员。
