Lingenfelter, a frequent candidate for political office, is joining Manion and Murphy in the 8th Congressional District race.
Lingenfelter has already filed the 2,514 petitions required to win a spot on the ballot as an independent and will file more by the Aug. 1 deadline to discourage a challenge to his signatures.
Earlier this year, he was going to run as a Republican until it became apparent that the party was lining up behind Manion.
According to Lingenfelter, 80 percent of voters hes asked have agreed to sign his petition.
"People are disgusted with both parties," he said.
Lingenfelter likes the independent label, contending that the major parties offer no solutions to problems.
"I dont have to make excuses for either party," he said. "I dont have the party baggage."
Lingenfelter is refusing to accept money from political action committees. He believes most contributors to campaigns expect something in return, but he says voters deserve an independent voice.
"They can expect me to do what I think is right," he said.
Lingenfelter labels Murphy as a "liberal." He thinks Manion has a noble reason for running honoring the death of his son Travis in the Iraq war but said the Republican is not talking about issues such as health care, the economy and war and peace.
Murphy is among the politicos who will appear on Aug. 19 at Finnigans Wake for the 18th annual Stu Bykofsky Candidates Comedy Night, a fund-raiser for Variety The Childrens Charity.
Bykofsky, a Philadelphia Daily News writer, has raised more than $300,000 in the last 17 years. Finnigans Wake co-owner Mike Driscoll provides the room for free.
The other candidates appearing will be state Attorney General Tom Corbett and challenger John Morganelli; Rob McCord and Tom Ellis, who are running for state treasurer; 1st Senatorial District candidates Larry Farnese and Jack Morley; state Rep. John Perzel and challenger Rich Costello; U.S. Rep. Bob Brady and challenger Mike Muhammad; and U.S. Rep. Allyson Schwartz and challenger Marina Kats.
Tickets cost $60. They are available by sending checks to Variety, c/o Ellen Ganley, 1520 Locust St., 2nd Floor, Philadelphia, PA 19102.
To pay by credit card or for more information, call Variety at 215-735-0803.
Teamsters Joint Council 53 has endorsed Democrat Brendan Boyle in the 170th Legislative District.
Boyle is facing Republican Matt Taubenberger for the seat of retiring GOP Rep. George Kenney.
Brian Reice, president of Local 169, cited Boyles background. His father, Francis, was a Teamster for 25 years. His mother, Eileen, is a crossing guard and a member of AFSCME District Council 33.
"He comes from a hard-working family and he never forgot where he came from," Reice said. "Brendan will be a great state representative for all working people."
Boyles other union endorsements have come from Fraternal Order of Police Lodge 5, the local building trades and the Pennsylvania State Education Association, all of which previously supported Kenney.
Reporter Tom Waring can be reached at 215-354-3034 or twaring@phillynews.com