A short list of rankings that show U.S. Rep. Dennis A. Ross (R-FL-15^th) to be either the “most conservative” Congressman in the House of Representatives – or, at least, very close. (Compiled by myself, Gordon Wayne Watts, LAKELAND, Fla., USA., today, Monday, 04 April 2016)

“Congressman Dennis Ross (R-FL) is currently ranked the most conservative Member of the House from Florida, according to our Legislative Scorecard. He first came to Congress thanks to the Tea Party wave of 2010, and has continued to live up to the conservative ideals he ran on.”

Source: “Congressional Profile: Rep. Dennis Ross (R-FL),” by Ashe Schow | May 22, 2012, Heritage Action for America: http://heritageaction.com/2012/05/congressional-profile-rep-dennis-ross-r-fl/

“LAKELAND | U.S. Rep. Dennis Ross has been ranked by the National Journal as the 15th most conservative member of the House.

The National Journal, a Washington, D.C. publication dealing with politics and government, based its annual rankings on the 2012 voting records of the 435 representatives and 100 senators. The rankings will be published next week.”

Source: “Journal Rates Ross 15th Most Conservative House Member,” By Bill Rufty, The Ledger, Wednesday, February 20, 2013 at 2:46 p.m.: http://www.theledger.com/article/20130220/POLITICS/130229963

Mirror link: http://dennisross.house.gov/news/documentsingle.aspx?DocumentID=345515

“I had met Ross a few weeks earlier in his Capitol Hill office with a different sort of dissection in mind. National Journal had recently ranked him and nine other Republicans as the most conservative House members, and I wanted to see what made one of the most conservative members of the most conservative, powerful freshman class in the history of the House of Representatives tick.”

Source: “Hog Wild: Hunting Boars With Congress' Most Conservative Member,” by Ben Terris, May 31, 2012, The Atlantic: http://www.theatlantic.com/politics/archive/2012/05/hog-wild-hunting-boars-with-congress-most-conservative-member/257946/

See also the screenshots below... (top one re-sized proportionately, and bottom one with time-stamp – both are of same page)