Describing himself as a "discipline soldier" of the party, the former union minister said the party will put up a united fight to defeat the Congress government.
"I am not disappointed at all. We all are united. I will put all my effort for our victory," he said.
Goel was present at a press conference at the BJP headquarters here when party president Rajnath Singh announced Vardhan's candidature for the top post.
Last week, Goel had projected himself as party's most popular face as chief ministerial candidate citing results of various opinion polls Goel had met BJP president Rajnath Singh and Narendra Modi on Sunday and opposed any move to make Vardhan the chief ministerial candidate.
The rumblings in the party following Goel's open assertion that he was the most suitable candidate for the post had angered a number of senior Delhi leaders who had thrown their weight behind Vardhan.
Goel is not known to have a cordial relationship with Vardhan.