Dear Senator Bernie Sanders,
I have supported your run for President. A have contributed several times. I have cajoled others to vote for you. I am still very sure that you would make the best President - by a wide margin.
Nonetheless, now is the time to wind down your campaign. Now is the time to acknowledge that Hillary Clinton is going to be our candidate. Whatever questions there might be about election irregularities or "superdelegates," Hillary is winning even without superdelegates, and by a much wider margin than any adjustment for voting irregularities might reverse.
Now is the time to unify the Democratic party, and to focus on the crucial challenge of winning in November.
On the very most important issues of our time: minority rights, women's rights, LGBT rights, immigrant rights, health care for all, lifting all out of poverty, and ensuring a progressive majority on the Supreme Court, you and Hillary and I agree on the fundamentals, if not the details.
I ask you to endorse Hillary Clinton, to prepare a rousing nominating speech for the DNC convention, and to work with great intensity for the election of all Democrats in the November election. America cannot afford the possibility of a racist misogynist President reversing our last 50 years of progress.