As Pima said, multiple noms even in competitive states do occur. I've had it happen to my candidates 2 of the past 3 years and I live in a VERY competitive district and state.
Given the enormous number of well-qualified candidates in my area, I'm not entirely sure why it happens. Two theories -- just my best guess, no idea if I'm right. First, the MOCs (i.e., their nom people/committees) don't communicate with each other either because they're disorganized or they really don't care about "spreading the wealth." Second, each MOC wants to nominate the candidates he thinks are the very best in the district/state -- no one wants to nominate those he perceives to be "leftovers" that the other MOCs "didn't want." Thus, in both cases, the same candidate could receive more than one nom to the same SA.
I've also seen a candidate with two MOC noms from a Pres nom (3 total noms from one of the most competitive states for USNA) be turned down. So, go figure. Likewise, I had a candidate with 3 noms (2 MOC + Pres) from a non-competitive state also be turned down -- twice! (Lest someone asks, one of the parents lived in the other state so the candidate could claim residence there; didn't make any difference in the long run).
The bottom line is that it's very hard to know what to make of competitiveness (or lack thereof) for a nom. As those of you reading posts in this forum for the past week have seen, it's a very complex process over which the candidate has no control, the SAs, have virtually no control, and the MOCs may or may not exercise the control they have.
It's fascinating stuff but save your energy and stress for putting together the best application and nomination packets that you can.
One other thing . . . with this being an election year, slates for departing MOCs will be turned in before they leave office (Inauguration Day). The outgoing MOC makes the selections but he/she needs to submit it while still in office. So, people this year MIGHT hear a bit earlier in those states and districts than they usually do.