Opinion of Posters Referring to Candidates Using the Person's First Name

[Kleine Scheiße]

First Name Only is Mandatory
Tulsi
Kirsten (alt.: K-Gilly)
Amy
Beto
Bernie

Acceptable to Use First Name
Julian
Kamala
Marianne (alt: Who?)
Mitch

Could Go Either Way but Probably Use Both Names
Pete Buttigieg
Sherrod Brown
Terry McAuliffe (alt.: T-Mac)
Tim Ryan
Eric Swalwell
Bill de Blasio
Angelina Jolie
John Kerry
Adam Schiff

Stupid; Never Use First Name Alone
Delaney
Warren
Yang
Bennet
Biden
Bloomberg
Booker
Hickenlooper
Holder
Inslee
Merkley
Bullock
McRaven
Moulton

[Associate Justice PiT]

     I generally prefer to use last names, as a more respectful form of address. I generally will use first/full names if it is not reasonable to divine the subject from context. In the context of the 2016 election Hillary Clinton would simply be "Clinton", but in a broader discussion of American political history it is necessary to differentiate between her and her husband.

[MASHED POTATOES. VOTE!]

Alas, I feel Mayor Pete's last name may turn into a butt of a joke rather quickly.

[Cokeland Saxton]

Horrible Practice imo