The firebrand left-winger is moving heaven and earth to translate a lead in the political polls into a win in September, when Ed Miliband's successor will be announced.
But Corbyn's hefty task was bolstered on Monday, after it was revealed he was the topic most searched for on Google beginning with "je", beating Jeremy Clarkson, J-Lo, and even Jesus Christ.
And Jeremy Corbyn is now the top "je" on Google: pic.twitter.com/hFWbez4FLU— Uncivil Still (@Uncivil_S) July 27, 2015
Yvette Cooper - admittedly with a unique first two-character combination - is Corbyn's only competitor on Google's search rankings.
Ed Miliband, the man all four MPs are racing to replace, has been out of the job less than three months, and is already resigned to the scrapheap of search history, trailing "Edexcel" and "EDF".