Congressman Lamar Smith

Updated at 11:21 p.m.

In preliminary voting results, U.S. House of Representatives incumbent Lamar Smith, who has served in Congress since 1987, clinched the Republican nomination for the District 21 race with 76.5 percent of the vote.

He will face Candace Duval, who beat Daniel Boone for the Democratic nomination with 61 percent of the vote.

"I am very happy with the results and very appreciative of the support I received from voters of the 21st district," Smith said. "It is very reassuring to have voters' approval."

Richard Mack, known as Sheriff Mack, received 15 percent of the Republican vote, and Richard Morgan got 8.5 percent of the vote.

"What worries me the most is that Mr. Smith will take this as an endorsement of what he's doing, [which is] clearly supporting laws that are against the Bill of Rights and are unconstitutional," Mack said. "My hope is that he will reassess [the Stop Online Piracy Act] and some of these other horrible laws and start conducting himself as a true Texan."

SOPA, introduced earlier this year, has been criticized for potentially infringing on freedom of speech and innovation. Proponents said the act would help combat the illegal download, streaming and trafficking of intellectual property on foreign websites, such as Pirate Bay.

District 21 includes Bandera, Blanco, Comal, Gillespie, Kendall, Kerr and Real counties as well as parts of Bexar, Hays and Travis counties.

Duval was the delegate for Texas Precinct 229 at the 2010 state Democratic convention. Duval now volunteers for the Texas Democratic Party. Boone received his Ph.D. in experimental psychology and has worked in the hospitality industry for 16 years. Prior to that, he was a lieutenant colonel in the Air Force.