Honolulu mayoral hopeful Kirk Caldwell is holding his third fundraiser for the 2012 election tonight.

It’s scheduled for 5 p.m. to 8 p.m. at Alonzo’s at the Mililani Golf Course Restaurant, and the suggested donation is $50 per person, according to a new filing with the Campaign Spending Commission.

In other fundraiser news, rail opponents are holding their own to help finance their lawsuit against the city and the FTA. From plaintiff Smart Business Hawaii‘s newsletter today:

You are invited to an evening of wine, pupus, and good conversation to “Save Our Honolulu” from the worst environmental blight and the most expensive project in Hawaii’s history. This Saturday, March 24th from 6:00 to 8:00pm, Rob and Ann Burns residence, 12 Poipu Place, Portlock. All proceeds will go to the lawsuit to defend Honolulu from elevated rail transit in downtown Honolulu.There will be some beautiful planters for purchase and Juan de Villbes will entertain with his classical guitar. Cost $100 per person (80% deductible)

Ben Cayetano is among the plaintiffs, but donations to SBH are not covered by campaign finance laws.