I'm not. I'm pretty sure there would be many like it from others as well.
It's "our guy" now and instead of standing on one's principles those principles are "adjusted accordingly". I'm still where I was so many years ago on the NBC issue.
To me "party over principle" means that a person is asked to abandon their core principles merely to ensure that a Party candidate is elected to office. Usually a person has several core principles that they feel strongly about. I'm sure that you have more than one yourself.
So, to me, the question becomes which of your core principles are you going to abandon solely for the sake of Party advancement? And then a person has to ask themselves if they're ready, and willing, to abandon some of their core principles for the sake of the Party, will they abandon all of their core principles for the sake of the Party. Because as soon as you give in and abandon those principles there is a push at the next election for you to abandon even more of your principles because you did so the last time and the Party knows this.
And eventually you have to look at yourself in the mirror and realize that you have no core principles any longer as you've abandoned them over time for nothing more than a short term political victory.
I simply can't sell my birthright (eventually all of my core principles) for a mess of pottage (short term political victory) else I damn my own soul.