"It’s tough watching my party colleagues taking oath in the Lok Sabha today," Omar Abdullah posted on X.
"Such mixed emotions, I’m proud of their victory & the opportunity they’ve got to serve the people of J&K," he said.
"At the same time I’m gutted I won’t be representing the people of North Kashmir. That said, life goes on," Abdullah posted on X.
Giving Omar Abdullah a jolt, jailed Er Rashid beat him by over two lakh votes in the recently held Indian general polls.
India voted to elect new Parliamentarians during a seven-phased election this year.
The Bharatiya Janata Party-led NDA government returned to power for a record-equalling third straight term.
Narendra Modi became the second person after former Prime Minister Jawaharlal Nehru to become PM for three terms.