Doug Jones is up for re-election in Alabama in 2020. Nevertheless, he is voting his conscience.
He's voting to convict Trump on both counts. From his website:
On the day I was sworn in as a United States Senator, I took an oath to protect and defend the Constitution. At the beginning of the impeachment trial, I took a second oath to do ‘impartial justice’ according to the same Constitution I swore to protect.
These solemn oaths have been my guides during what has been a difficult time for our country, for my state, and for me personally. I did not run for Senate hoping to participate in the impeachment trial of a duly-elected President, but I cannot and will not shrink from my duty to defend the Constitution and to do impartial justice.
In keeping with my oaths, I resolved that throughout this process I would keep an open mind and hear all of the evidence before making a final decision on the charges against the President. For months, I have been studying the facts of this case exhaustively. I have read thousands of pages of transcripts, watched videos of testimony, taken copious notes, reviewed history and precedents and discussed this case with colleagues, staff, and constituents, in addition to having participated in the Senate trial over the past two weeks. After many sleepless nights, I have reluctantly concluded that the evidence is sufficient to convict the President for both abuse of power and obstruction of Congress.