U.S. Rep. Mazie Hirono’s campaign on Tuesday released an internal poll that showed Hirono up over Case 50 percent to 33 percent in the Democratic primary for U.S. Senate.
The poll was taken from telephone interviews by the Benenson Strategy Group of Washington, D.C., among 500 likely primary voters from July 30 through Aug. 1. The margin of error was 4.3 percentage points.
The Hirono campaign released the poll in advance of the expected release of an automated poll by the online news service Civil Beat on Wednesday. Civil Beat’s previous polls have suggested the primary is a dead heat.
Strategically, the Hirono campaign has been operating for months with the belief — reinforced through internal polling — that Hirono has a solid lead. The campaign waited until July to launch most of its advertising, with the messages aimed at the Democratic base and at former Gov. Linda Lingle, the leading Republican, not at Case.