Accompanied by party MLAs from south Kashmir, Mehbooba submitted her documents to Additional Deputy Commissioner, Anantnag, Mohammad Yousuf.
The PDP leader has represented the Anantnag Lok Sabha seat from 2004 to 2009.
Mehbooba told reporters after filing her nomination that her party would seek people's mandate for building a consensus in Parliament for resolution of the Kashmir issue.
"We want problems and issues of people of the state to be addressed by Parliament. So far, we have seen our MPs look for ministerial berths for themselves and after their tenure ends, they look for some sort of rehabilitation for their children," she said.
The delay was caused as election officials were checking the documents of the PDP president.