The phrase "fellow senators" means the other people who are also senators - the colleagues or companions who hold the same position in a governing body. Full definition
He said he had not sought endorsements from fellow senators and had not discussed his plan with industry, environmental or lobbying groups. (green.blogs.nytimes.com)
Jacobs, along with fellow Senator Tim Kennedy and Assemblyman Sean Ryan, are urging Cuomo to not only preserve the tax credit but also immediately re-authorize it. (news.wbfo.org)
Many Democrats in Congress opposed the Kansas governor and former fellow senator for the ambassadorship due to his policies for LGBT workers, while evangelicals have cheered Brownback's record on religious freedom. (christianitytoday.com)