Solution to 12A has been deliberately left unsolved and is to be answered only by a non-regular / novice commenter, with proper annotation. Those who have answered earlier in the week, please give others a chance.
Open for anyone to solve, if not solved by 1 PM.
ACROSS
8 Specific person primarily thrown out of a joint (9) ARTICULAR pARTICULAR
9 Lug piece of luggage for aristocrat (4) EARL {EAR}{Lu...e}
10 Clandestine exercise primarily renounced, truth broadcast (5,3,7) UNDER THE COUNTER {Ex...e+RENOUNCED+TRUTH}*
12 Sort of leaning Member might share, essentially political? (9) A?I?N?E?T (Addendum ALIGNMENT {LEANING+M}*{p..iTi..l} - See comments)
14 A record label launches Filipino (7) TAGALOG {A}{LOG}<=>{TAG}
17 Party leading Government in compact returning pointers, for example (3,4) GUN DOGS {DO}{Go...t} in {SNUG<=}
21 'Rank' clued incorporating 'rank' became a sore point (9) ULCERATED {ULCE{RATE}D*}
24 Assist girls and send out calls for help (8,7) DISTRESS SIGNALS {ASSIST+GIRLS+SEND}*
25 Day is cold, a record (4) DISC {D}{IS}{C}
26 Speaker stops point about suspensions (9) MORATORIA {ORATOR} in {AIM<=}
DOWN
1 Made in Macau, turned up around France (12) MANUFACTURED {MACAU+TURNED}* over {F}
2 Investigating way out, edging out on the way out (8) STUDYING {ST}{oUt}{DYING}
3 Rocks collapse bringing out one effect of springtime thaw (3,3) ICE RUN {ICE}{RUiN}
4 Slice of Babybel cheese for Turkish ambassador (6) ELCHEE [T]
5 Cost of space taken up storing grain before end of harvest (5,3) PRICE TAG {GAP<=} over {RICE}{h...sT}
6 Regret making the last top in pure, sky-blue (8) CERULEAN {C{(+e)ERU(-e)}LEAN}
7 Animals barking rub scent every so often in retreat (6) BRUTES {RUB}*{ScEnT<=}
11 Elevated tier assigned offering vantage viewpoint (8,4) RINGSIDE SEAT {TIER+ASSIGNED}*
15 Learned people have this energy kindled with lively crowds (8) LITERACY {LIT}{E}{RACY}
16 Horrible golf, pity to a few (8) GRUESOME {G}{RUE}{SOME}
20 Film about current and force lifting fish out of water (6) MISFIT {MIST} over {I}{F}<=
22 Men standing behind expelled Cuban leader (6) CASTRO {OR<=}<=>{CAST}
Reference List
Member = M, Party = DO, Day = D, Cold = C, France = F, Way = STREET = ST, Rocks = ICE, Golf = G, United = U, Thailand = T, With = W, Current = I, Force = F, Men = OR(Other ranks), Son = S