"I'm excited about this upcoming election," Gregg said, who served in the Indiana House of Representatives for 16 years.
Gregg told the audience he has been traveling the state, "seeing record crowds and enthusiasm."
He said his message was simple, and it was all about jobs.
"Any second we spend talking about anything other than jobs is a second wasted," he said. "We're talking about good, middle-class, manufacturing, good paying jobs."
Gregg spoke about his competitor, Republican Mike Pence.
"He voted time and time again to see our good manufacturing jobs shipped overseas," Gregg said. "He knew it would hurt Indiana, and he said that. But he was a free and fair trader. I can tell you as governor of the State of Indiana, I will say we can not afford to ship anymore jobs overseas."
Gregg explained Congress recently had to decide whether to loan money to two American companies over 100 years old -- Chrysler and General Motors -- a decision Gregg said was a "no-brainer," and he would have voted yes.
"The person I'm running against said 'Nope, we're not going to make a loan to the automobile industry, to these American companies; we're not going to invest in American workers.' And he voted no."
Gregg said Indiana has big opportunities in energy and agriculture.
"We're a manufacturing state," he said, explaining that anything built in Indiana should be built for Indiana. "Take advantage of our natural location of logistics. Let's have a good infrastructure system. Let's work together and we can do that, provided our children are educated."
He said he thought it was wrong to blame everything on the public school system and to demean or demoralize the public school teachers.
"We've got such opportunities, but we've said to the public educators, 'We don't want you, you don't know what you're doing.' We've got to give schoolteachers a voice in education."
"We can do all this if we work together, but we've declared war on organized labor; we've declared war on schoolteachers," he said.
Gregg said there has been an attack on women. He said the issue is not about abortion, but instead the issue is about women's health care.
"Federal law prohibits any amount of money going to any organization like Planned Parenthood or any other organization. No federal or state tax dollars can be used for an abortion."
He said that takes away the right for women to be offered birth control, mammograms, cervical exams and cancer screenings.
"It's about women's access to health," Gregg said. "I'm a pro-life Democrat. This is not about abortion; they are denying women access to health care."
Gregg also spoke about fair pay for men and women. He said in Indiana, women make 72 cents for every $1 that a man makes.
"This is also an attack on women," he said.
"When we talk about jobs, look at (my opponent's) record," Gregg said. "There hasn't been one job created."
He finished by saying, "We're going to win this, because we have too much at stake not to."
During the dinner, Gregg passed out bumper stickers with mustaches on them. He explained to the audience that the last time someone with a mustache ran for Indiana governor was in 1908.
"Vote for the guy with the mustache," he said.
In addition, State Representative Terry Goodman spoke for Joe Donnelly, who is running for state senator but could not attend the dinner.
Goodman began by saying, "The people in charge of this state are truly a bunch of kooks. There is no common sense in Indianapolis right now in charge. What they have done in the last two years specifically in the State of Indiana is truly immoral. They have spit in the face, poked in the eye and kicked in the shin every single population in the State of Indiana -- those folks who can't defend themselves."
Goodman said state officials have attacked special needs students, senior citizens and the girl scouts. He quoted Matthew 25:40, which states, "Truly I tell you, whatever you did for one of the least of these, you did for me."
He went on to explain Democrats need to be in each of the official seats including congressman and state senators.
Finally, congressman candidate Dave Crooks' campaign manager spoke on his behalf. He gave a brief background on the candidate and updates on the race. He said most voters Crooks has talked to are concerned about the Medicare guarantee. He also spoke briefly about job funding and education funding, as well as Crooks opponent.
Each candidate attending the dinner had an opportunity to speak at the end of the event after each office holder was honored by applause.
The primary election is Tuesday, May 8.