It's as if his campaign scoured liberal websites to see what they were calling conservatives to come up with their adverbs. Next he'll be calling himself "far-right" and "bat-sh** insane".
A theory: this line was written by a 19-year-old campaign intern who either:
a) doesn't know that the word "severe" has negative connotations
b) is actually a liberal democrat who's interning with the Romney campaign either to get started in politics or because his parents are forcing him, and is intentionally sabotaging Romney's campaign in order to get revenge for making him sell his soul
