The phrase "offer my candidacy for" is correct and usable in written English. You can use this phrase when you are expressing your intention to apply for a particular position or office. For example, "I am writing to offer my candidacy for the position of Chief Operating Officer at ABC Company."
I would like to offer my candidacy for this position.
I am writing this application with reference to the open Teaching Assistant position at your school and I wish to offer my candidacy for this job.
To announce my candidacy for president of the United States.
"I expected to announce my candidacy for governor.
"I am committed to my candidacy for the prime ministry," Mr. Hariri said.
In a video, the former KKK grand wizard said, "I'm proud to announce my candidacy for the United States Senate".
I hereby announce my candidacy for the position.
I just announced my candidacy for Recording Secretary of Larry Storch Elementary School Student Council.
I would like to announce my candidacy for this position.
Today I announce my candidacy for President of the United States!
Learn more about my candidacy for the Presidency at ChrisDodd.com.
I love the desktop app, it’s always running on my Mac. Ludwig is the best English buddy, it answers my 100 queries per day and stays cool.
Cristina Valenza
Retail Lead Linguist @ Apple Inc.