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Kailua’s state House district was unique in three ways in Hawaii’s three biggest primary races Saturday:

• District 50 was Ed Case‘s few bright spots in his blowout loss against Mazie Hirono.
• District 50 was the site of Tulsi Gabbard‘s largest victory margin over Mufi Hannemann in the 2nd Congressional District primary.
• District 50 was one of Ben Cayetano‘s strongest bases of support in the Honolulu mayor’s race.

The electoral map shows Hannemann won just one of 27 districts: central Maui, where he spent much of Election Day rallying with union supporters. Case won just four of 51 districts statewide: Kailua, Hawaii Kai, East Honolulu and Waikiki. And Kirk Caldwell actually topped Cayetano in just two of 35 House districts on Oahu: Aiea and Pearl City.

These are some of the findings from Civil Beat’s analysis of district-by-district voting results from Saturday’s primary election.

Here’s a contest-by-contest breakdown:

U.S. Senate

Hirono beat Case in a landslide, 57 percent to 40 percent. And she won 47 of the state’s 51 House districts.

But her support wasn’t uniform across the state. There were areas of relative strength and relative weakness that point to trouble spots in her general election race against former Hawaii Gov. Linda Lingle.

The wealthier areas Case won could be tough for Hirono in November. There were 13 House districts where Hirono secured between 50 percent and 55 percent of the Democratic Party primary vote, including the Waialae seat currently held by retiring Republican Barbara Marumoto and other districts across the Windward side and southern shore of Oahu.

None of those relative weak spots — emphasis on relative — were on neighbor islands.

Hirono performed strongest on Maui, racking up more than 70 percent of the Democratic vote in District 9 (Kahului), District 8 (Wailuku) and District 13 (Molokai, Lanai, Hana). Of the seven other districts in which Hirono eclipsed 65 percent, six were on neighbor islands and only District 44 (Nanakuli) is on Oahu.

Will Lingle, a former Maui mayor, erase some of that edge? That remains to be seen.

Here’s the full interactive table for the Democratic Senate primary:

Honolulu Mayor

For all Cayetano’s talk about getting 50 percent plus one vote in the primary to avoid a runoff, very few pockets of voters were on board with that idea.

Cayetano eclipsed the 50 percent threshold in just seven of 35 Hawaii House districts on Oahu. His strongest performance came in District 30, which encompasses part of the Kalihi area where Cayetano grew up. Nearby Districts 29 and 28 were also among the most in favor of Cayetano.

Caldwell managed to beat Cayetano in two areas expected to be served by the controversial Honolulu rail project, Halawa and Pearl City. He eclipsed 30 percent support in 13 districts overall.

Finally, incumbent (and now lame-duck) Mayor Peter Carlisle had few bright spots. He had nearly as many districts with less than 20 percent support (three) as he did districts with more than 30 percent support (four). He finished in third place in 26 of 35 House districts overall. Carlisle came closest to a first-place finish in Waipahu/Ewa (No. 42), where the split was 34.4 percent for Cayetano, 33.2 percent for Carlisle and 31.9 percent for Caldwell.

Here’s the full interactive table for the Honolulu mayor primary:

2nd Congressional

Hannemann’s defeat was nearly universal, with his only district win in 27 opportunities coming in District 9, which includes portions of Wailuku and Kahului on Maui. Hannemann was waiting for the first printout results at a union hall there Saturday, but delays on the Big Island meant he had to leave before the numbers were in.

Hannemann only reached 40 percent support in four other districts — another on Maui, two on Kauai and the North Shore of Oahu.

Gabbard’s two strongest areas were Kailua and Waimanalo on the windward coast of Oahu, followed by two Big Island districts both eclipsing 60 percent support and then a Maui district and a Kauai district after that. She won every county by double figures, as Campaign Chair Max Glass pointed out in his remarks at her party Saturday night.

The other candidates in the race rarely received support above the low single digits, but there were zones of relative strength.

Esther Kiaaina notched 12.7 percent support in Ewa Beach (District 43) and 10.6 percent support in Nanakuli (District 44), near where she grew up.

Bob Marx pulled 12 percent support in District 4, which includes Puna. The Big Island’s seven districts were his seven strongest districts. He’s an attorney there and based his campaign out of Hilo.

Here’s the full interactive table for the 2nd Congressional primary: