Candidates for the 25th Congressional District seat, attorney Bryan Caforio, incumbent Steve Knight and LAPD Lt. Lou Vince, debate in Newhall, Calif., on May 5.When Rep. Steve Knight (R-Lancaster) took the microphone to introduce himself&nbsp;at a debate in his district Thursday night, he&nbsp;started off by talking&nbsp;about his career, his&nbsp;wife and his children.Then he quickly pivoted&nbsp;to distancing himself from&nbsp;Donald&nbsp;Trump.Trump, Knight admitted,&nbsp;"looks like,&nbsp;maybe, the presumptive nominee for the Republican Party &mdash;&nbsp;but we don't know&nbsp;that yet."&nbsp;While some in his party, including&nbsp;Rep. Darrell Issa (R-Vista)&nbsp;are embracing Trump,&nbsp;Knight, who is in his&nbsp;first term,&nbsp;has not endorsed&nbsp;the controversial GOP presidential candidate.&nbsp;Knight's north Los Angeles County district is almost evenly split between Democrats and Republicans, with 21% of voters listing no party preference.National Democrats are making a strong push for the seat, and some analysts&nbsp;say the seat is more in play and will be more expensive for&nbsp;Republicans to hold with Trump at the top of the ticket.In an interview after the debate, Knight said he was still "working on figuring out what I am going to do with the presidential race."&nbsp;Though Trump looks like he has locked up the nomination, Knight said he is still looking at "some of the situtaions that might happen in July" at the Republican National Convention in Cleveland.&nbsp;"We still got a convention," he said.&nbsp;"And they are not going to cancel the convention, and he still hasn't gotten enough delegates. So until that happens, I think this is a moot point, I&nbsp;think this is something for sensationalism." &nbsp;Knight on Thursday&nbsp;debated his two Democratic challengers, attorney&nbsp;Bryan Caforio and Los Angeles Police Department&nbsp;Lt. Lou Vince.Knight isn't the only one holding out on an presidential endorsement.&nbsp;Caforio has yet to endorse a candidate in his party's contest. His campaign manager, Orrin Evans, said Caforio is "excited" about&nbsp;front-runner Hillary Clinton and&nbsp;Vermont Sen. Bernie Sanders and will "proudly support" the Democratic nominee.&nbsp;Vince&nbsp;has endorsed Sanders.