Across:
8 Campaigned (RAN-) for party (-DO-) leader managing (leader ‘managing’ = -M) (RANDOM) something uncoordinated (RANDOM),
9 Last horse (last ‘horse’ = E-), cross (-X-) on maiden (maiden = -AMINED) run (= anagram indicator) (EXAMINED), checked by vet (EXAMINED),
10 Remove organ from lounge bar (remove ‘organ’ from ‘lounge bar’ = lueb = BLUE) in Down (down / BLUE),
11 It’s difficult (HARD) to get stolen gear (hot = TO H-) back (= reversal indicator) – anything antique (-OLD) (HARD TO HOLD) to a bar of soap, for instance (HARD TO HOLD),
12 Cooks potatoes, for example (STEAMS), ahead of schedule (a head of ‘schedule ‘= S-) with a number of sides (-TEAMS) (STEAMS),
14 Cross (MONUMENT) mother (M-UM-) admits broadcast (-ON-) is half decent (half ‘decent’ = -ENT) (MONUMENT),
15 Sod (EARTH-) that wreck (SHATTER-) in (-IN-) Government (-G) (EARTH- SHATTERING) – the one that’s shocking (EARTH-SHATTERING),
18 Those controlling the apps (PROGRAMS) in buggies (prams = P-RAMS) around mid-afternoon (mid ‘afternoon’ = -R-), love (-O-) golf (-G-) (PROGRAMS),
20 Novice (learner = L-) edits (edits = -ISTED) novel (= anagram indicator) (LISTED) on the stock exchange? (LISTED on the stock exchange),
22 Boozy (= anagram indicator) port (port = PROT-) is never ending (‘never’ ending =-R-) and is responsible for the scene (-ACTOR) (PROTRACTOR) in the drawing room (PROTRACTOR),
24 What’s found in Marseilles (found in ‘Marseilles’ = seil) on the way back (= reversal indicator) (seil = LIES) gives the wrong impression (LIES),
25 Influenced (AFFECTED) what the player did (A-CTED) around very loud (forte fortissimo = -FF-) final game (final ‘game’ = -E-) (AFFECTED)
26 Heartless (n) old jailer (“turnkey” without “n” = TURKEY) is expected for Christmas (TURKEY).
Down:
1 Is missing from Bastille (‘is’ missing from ‘Bastille’ = batlle = BALLET) in flames of Paris, for instance (Boris Asafyev’s Flames of Paris = BALLET),
2 Sample of bootleg demo (sample of ‘bootleg demo’ = EDGE) reviewed (= reversal indicator) by lippy type (EDGE),
3 Can’t say this? Enough (can’t say this enough = EMPHASIS) stress! (EMPHASIS),
4 Frappé – a refreshing bottle (‘frappé – a refreshing’ bottle = PEAR) for the conference (PEAR),
5 Bolt (FASTEN) is quick on his feet (FAST-) and fairly (half of) keen (half of ‘keen’ = -EN) (FASTEN),
6 Bad experiences (NIGHTMARES) – what you might get lying over 7 down when you’re out (NIGHTMARES on ‘bed linen’),
7 Plot (BED) to disturb (= anagram indicator) Lenin? (Lenin = LINEN) (BED LINEN) I’d have to sleep on that! (BED LINEN),
13 Choir member (ALTO-) to fetch (-GET-) that woman (-HER) (ALTOGETHER) in nude (ALTOGETHER),
14 Names (names = MEANS) building (= anagram indicator) in Capital (capital/money = MEANS),
16 Contains a lot of oxygen (AIR-), carbon (-C-) and a large amount of something else? (-RAFT of something) (AIRCRAFT) Presumably this will go over your heads! (AIRCRAFT),
17 Permit (TOLERATE) for tenor (T-) heard in The Ring in Madrid (-OLE- heard in the bullring) for the hourly fee (-RATE) (TOLERATE),
19 Finds one’s way around (ADAPTS) with Bill (AD-) and Pat (pat = -APT-) Cook (= anagram indicator) at school (-S) (ADAPTS),
21 Look out for (EYE-) the French (the = -LE-) toast starter (‘toast’ starter = -T) (EYELET), as it’s not typical in Wellington? (EYELET not typical on Wellington boot),
23 The limits of time and motion study (the limits of ‘time and motion study’ = TIDY) to sort out (TIDY),
24 The father (the LORD) of colour-blind lion cub is missing (‘colour-blind’ without ‘lion cub’ = orld = LORD).