Yeddyurappa filed his nominations for Shimoga Lok Sabha constituency, where he is pitted against Geetha Shivaraj Kumar, daughter of former Chief Minister S Bangarappa and wife of Kannada film actor Shivarajkumar.
Congress leader and Railway Minister Kharge is seeking re-election from Gulbarga Lok Sabha (Reserved) constituency.
Moily filed nominations seeking re-election from Chikkaballapur constituency.
Former Chief Ministers N Dharam Singh (Congress) and D V Sadananda Gowda (BJP) filed their nomination papers in Bidar and Bangalore North constituencies respectively.
BJP's Ananth Kumar Hegde (Uttara Kannada), Nalin Kumar Katil (Mangalore) and Pratap Simha (Mysore) also filed nominations.
The last date for filing nominations is March 26.
Scrutiny of papers will be taken up the next day. March 29 is the last date for withdrawal of nominations.
With PTI inputs