1) Your favorite candidate is the only one who can win.
2) Your favorite candidate is the only one who will truly get behind a progressive agenda.
3) Other candidates are part of some nefarious conspiracy to destroy your candidate.
4) Supporters of other candidates are motivated by groupthink.
5) Supporters of other candidates are operating in bad faith and arguing dishonestly.
6) "Powerful" bloggers shouldn't be "biased."
7) Primary season is the silliest season of all.