Millard Fillmore
pygmy
minor celebrity
nobody
whatstheirname
peon
no-name
nonentity
politard
sideman
power behind the throne
whatshisname
joker
Zelig
whatshisface
mugwump
insignificancy
zero
subcelebrity
boner-killer
dark horse
mediocre
legend in one's own lunchtime
famousish
pip-squeak
ultraleftist
nonpolitician
bit player
small fry
squirt
noninsider
mannie
politique
unalive
antipolitician
unheard-of
thingamabob
forgotten
pissant
nameless
commoner
noncandidate
pinkeen
man on the street
philosophunculist
inglorious
anything
Joe Nobody
celetoid
nonofficial
pseudoprogressive
pococurantist
pond scum
sciolist
shrimp
smatchet
admiral of the Swiss Navy
bolter
sorehead
nondescript
wastoid
presidentiable
Lowtherite
toe rag
froglet
undeceiver
dilly
noninfluencer
pseudorevolutionary
fartface
diversionist
faceless bureaucrat
small change
sack of flesh
Ozymandias
nonillustrious
rare bird
unillustrious
mispromotion
notability
autothaumaturgist
mediocrat
demicelebrity
marginal
nonrepublican
ham-and-egger
owl
surrogate
anus
character
nonrevolutionary
stumper
write-in
mouth breather
nonprotagonist
microperson
something or other
excluder