On Monday night, the Orange County Coroner's office, which said it had conducted an autopsy, wasn't releasing results, pending a further investigation.
Donald Wagner is running for the 70th state Assembly District seat being vacated by Chuck DeVore. Wagner is on today's ballot, contesting the Republican Party primary against three other GOP hopefuls.
Paul Wagner had been involved in helping his father's campaign efforts.
"We want to finish [the campaign] in Paul's name and honor how much he believed in my dad," said his sister.
Paul Wagner was found dead in his SUV shortly after 9:30 a.m. Sunday. The car was in a garage in the 2700 block of Newport Boulevard, police Sgt. Spencer Arnold said.
Paul was diagnosed with bipolar disorder a year ago and was on prescribed medication, Kate Wagner said.
The family suspects that the medication may have played a role in Paul's death, although the results of a toxicity report will not be in until the end of the week, Kate Wagner said.
Although the investigation is ongoing, there were found no signs of foul play or suicide at the scene, Arnold said.
"We were worried about negative speculation," Kate Wagner said. "But anything people say — that's just not Paul. He was the most pure soul in the world."
Paul Wagner had just finished his second year at Purdue University and was visiting his family while on summer break.
He fervently loved "all things sports and sports-related," and had been recruited by several smaller colleges as a catcher while playing for Irvine's Northwood High School team, his sister said. He instead chose to go to Purdue without having a guaranteed spot on its baseball team.
Once at Purdue, he opted to focus on majoring in political science with minors in linguistics and communications. He eventually planned to go to law school.