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Washington Correspondent 鈥� The Denver Post

Mark K. Matthews

Mark K. Matthews is a former Washington correspondent for The Denver Post.

Jon Keyser

Liberal group targets signatures used by Colorado GOP Senate candidate

May 16, 2016 at 12:15 p.m.

Liberal group targets signatures used by Colorado GOP Senate candidate

U.S. Capitol

Court ruling keeps two Colorado GOP candidates off U.S. Senate ballot

May 5, 2016 at 5:07 p.m.

Court ruling keeps two Colorado GOP candidates off U.S. Senate ballot

Republican presidential candidate Donald Trump speaks during a primary night news conference, Tuesday, May 3, 2016, in New York.

GOP leaders in Colorado still skeptical of Donald Trump

May 5, 2016 at 4:57 p.m.

GOP leaders in Colorado still skeptical of Donald Trump

Robert Blaha

Blaha and Frazier file appeals to earn spot on U.S. Senate ballot

May 3, 2016 at 12:54 p.m.

Blaha and Frazier file appeals to earn spot on U.S. Senate ballot

U.S. Rep. Scott Tipton playfully throws a rock into Cement Creek while on a tour by members of the Animas River Stakeholders a few miles northeast of Silverton Colo., Wednesday June 13, 2012. Tipton was educated about mine waste water and other reclamation applications. William Woody, Special to the Post.

Tipton proposal, largely written by oil and gas company, draws criticism

October 25, 2016 at 11:34 a.m.

Tipton proposal, largely written by oil and gas company, draws criticism

Jon Keyser

Jon Keyser back in U.S. Senate race as judge issues stay on ballot

May 22, 2016 at 6:08 p.m.

Jon Keyser back in U.S. Senate race as judge issues stay on ballot

Robert Blaha

Two more GOP Senate candidates in Colorado fail to make ballot

December 23, 2016 at 2:36 p.m.

Two more GOP Senate candidates in Colorado fail to make ballot

Robert Blaha, Ryan Frazier, Darryl Glenn, Jack Graham and Jon Keyser.

Jon Keyser falls short in effort to make Colorado Senate primary ballot

May 22, 2016 at 6:08 p.m.

Jon Keyser falls short in effort to make Colorado Senate primary ballot

Republican presidential candidate Donald Trump speaks during a campaign rally, Wednesday in Bethpage, N.Y.

“Cooler heads prevailed.” Trump won’t protest delegate loss in Colorado

April 24, 2016 at 1:34 a.m.

"Cooler heads prevailed." Trump won't protest delegate loss in Colorado

denverpost default image

Jack Graham makes primary ballot; pressure builds for rivals

April 22, 2016 at 8:04 a.m.

Jack Graham makes primary ballot; pressure builds for rivals