Here you go:

Address the letter to “My fellow Republican.” For the final paragraph put:

I urge you to take a few moments and go to the YouTube Channel “Republican Voters Against Trump” (RVAT). There you will find many more convincing testimonies from individuals who share our philosophical, political, and moral beliefs. There are many concerned Republicans who are fearful that Trump’s actions have eroded our party’s ability to influence the nation. We do not abandon our conservative beliefs by withdrawing our support from Donald Trump. Instead, we lay the groundwork for a new era of prosperity and a renewed commitment to the traditional concepts that have been the backbone of our country since its inception.