Independent Democratic Conference Sen. Jeff Klein’s campaign says he has filed nine times the number of required petition signatures with the state Board of Elections.

Klein is making a show of his petition force as he faces a Democratic primary challenge from former city Councilman Oliver Koppell.

“This illustrates my support in every corner of the district. It’s tremendously gratifying when 9,000 Democrats want you to be the standard bearer of the Party,” Klein said. “I want to thank each and every person who knocked on doors throughout my district and each and every person who signed one of my petitions for their support. I’d also like to thank the political clubs that carried my petitions through the 34th State Senate District.”

The deadline to file petitions is Thursday.

Klein on Monday was also endorsed by the labor group that represents bridge And tunnel officers.