[Rome2000]

She is a fanatic.

We need lots of fanatics.

Just relax and take a deep breath.

[Mia T]

If only the Senate was as 'fanatic' in '98; if only it was a bit more meticulous about not having a couple of perjurers, obstructors of justice--and rapists--in the Oval Office, perhaps we would have prevented 9/11....

Presidential character is everything. And by extension, at least, so is senatorial character....

FYI.

Your point is well-taken, however, but I would tweak the wording a bit.
Personally, I would prefer 'focused' or 'tenacious.' ;)