WATCH: Swing State Democrat Flips To Trump, Urges Others To Do The Same

A Pennsylvania Democrat explained that he will be leaving his lifetime party and plans to endorse former President Donald Trump in a recent interview with Fox News.

Steve Rosenberg, a Democrat from Pennsylvania, pointed to the growing embrace of extremist ideologies on the left as a major factor in his decision. In short, Rosenberg argued that there is only "one candidate" for Jewish voters in November.

"If you're a Jew, if you're pro-Israel, there's only one candidate here," Rosenberg told Dana Perino. "Actions speak louder than words. Kamala Harris has surrounded herself with some of the worst Jew haters that there are. Maher Bitar... Philip Gordon, Ilan Goldenberg's got a nice name, but if you look at their records, they are pro-Iran. They are not pro-Israel," Rosenberg said during an appearance on "America's Newsroom."

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"To me, all the other issues that are on the table, whether you be climate-oriented, abortion-oriented, whatever your orientation is, if you are not focused on being a Jew and being pro-Israel right now, we are in the fight for our literal lives," he continued.

"And all those issues won't be there if we're dead in four years. They're trying to kill us."

While Jewish voters have historically backed Democrats in the past, Rosenberg believes that support for Trump is quietly surging within the community.