Across:
1 Route taken by budding winners (ROAD TO SUCCESS) ignored by potential losers (ROAD TO SUCCESS),
10 Where one might find Clementine (ORCHARD) or (OR-) Charlie (-C-) difficult (-HARD) (ORCHARD),
11 American (A-) part of the song (vocal) abridged (l) (‘vocal’ without ‘l’ = -VOCA-) for party (-DO) (AVOCADO) of The Greens (AVOCADO),
12 Downs first (‘downs’ first = D-) drink (-RUM) (DRUM) from cask (DRUM),
13 Courses (ROADS) for 15 across (‘road’ = ROAD-) at school (-S) (ROADS),
15 It’s all around today (ROAD on all sides of today’s grid), by the way (ROAD),
17 War bride misses weird (‘war bride’ misses ‘weird’ = abr = BRA) support for women (BRA),
19 Sample of juice, baguette (sample of ‘juice baguette’ = ICE BAG) and something for a headache (ICE BAG),
21 Rebel (= anagram indicator) rules (rules = ULS-ER) over Troy (-T-) (ULSTER) from northern part of the island (ULSTER),
22 Two presents (now + here = NOWHERE) from an uninteresting site? (NOWHERE),
23 US co-ed (US co-ed = ESCUDO) travelling (= anagram indicator) to old European capital (former capital/money of Portugal = ESCUDO),
25 Once on (once on = NEOCON) train (= anagram indicator) with American hawk (American political hawk = NEOCON),
27 Sample (BIT) bottled by inhabitants (bottled by ‘inhabitants = BIT),
29 Like two peas in a pod (SAME) or four characters involved in stonemasonry (four characters involved in ‘stonemasonry’) making a comeback (= reversal indicator) (emas = SAME),
30 Ancestor drops net (‘ancestor’ drops ‘net’ = acsor = ORCAS) for ocean predators (ORCAS),
31 The option to cure (HELP) – will that save someone’s bacon? (HELP),
34 Talk (ORATION) of kale from Lake Ontario (‘kale’ from ‘Lake Ontario’ = Ontario = ORATION),
35 Head (top) isn’t finished (p) (‘top’ without ‘p’ = TO-) with Daisy’s relative (-ASTER) (TOASTER) burning the bread in the canteen (TOASTER),
36 A lack of direction perhaps (ROAD TO NOWHERE) in writing (from the 3Rs = R-) introductions outlining Alexis De Tocqueville’s oeuvre (introductions ‘outlining Alexis De Tocqueville’s oeuvre’ = oadto = -OAD TO) from 22 across (‘nowhere’ = NOWHERE) (ROAD TO NOWHERE).
Down:
2 Block, in a technical way (OCCLUDE), coding primarily (‘coding’ primarily = -C-) in Cloud (Cloud = OC-LUD -) designed (= anagram indicator) by engineer (-E) (OCCLUDE),
3 Draw (DRAG) is a pain in the neck (DRAG),
4 Cleaning windows (ODD JOB) is awkward (ODD) for old patient type (have the ‘patience of JOB in the Bible) (ODD JOB),
5 Salinger leaves Guardian, as Glen (“Salinger” leaves “Guardian as Glen” = guadan = UGANDA) is in Africa (UGANDA),
6 Serving up (= reversal indicator) a sample of vindaloo curry (a sample of vindaloo curry’ = looc = COOL) that’s trendy (COOL),
7 Mediterranean (Mediterranean SEA-) drink (-PORT) (SEAPORT) in home of 18 down, for instance (SEAPORT in home of ‘fleet’),
8 Major artery (ROAD) for detective (DI-) getting type (-VERSION) (ROAD DIVERSION) of bypass (ROAD DIVERSION),
9 Coaches (ROAD TRANSPORT) those in 18 down (‘fleet’ = ROAD TRANSPORT),
14 Dated (ARCHAIC) Arabic (AR-) chair (chair) removed finally (r) (‘chair’ = -CHAI-) at college (-C) (ARCHAIC),
16 Secretary (P-A) admits switching (= reversal indicator) genetic material (DNA = -AND-) (PANDA) of beastly type of Chinese native (PANDA),
18 Paper (Financial Times = F-T) covers swimmer (eel) retiring (= reversal indicator) (eel = -LEE-) (FLEET) and going overseas to meet rivals (FLEET),
20 Local treacly substance (GOO) isn’t bad (good), in short? (‘good’ without ‘d’ = GOO),
21 Grecian vessel (URN) – it is missing from Turin (‘it’ is missing from ‘Turin’ = urn = URN),
24 Unfinished (l) lock-up (‘cell’ without ‘l’ = CE-L-) contains educational programme (-MBA-) with old (-O) (CEMBALO) keyboard (CEMBALO),
26 Type of weather (-HEAT-) in Clare (C-E-) at the end of September (at end of ‘September’ = -R) (CHEATER) for a shark? (CHEATER),
27 Generally broken (wild horse/BRONCO) by relative (brother = BRO-) in the army (non-commissioned officer = -NCO) (BRONCO),
28 Some thermostat to outlet (some “thermostat to outlet” = TATTOO) can be drawn in the parlour (TATTOO in Tattoo parlour),
32 Stumble on (FIND) bank’s final dividend (banks ‘final dividend’ = FIND),
33 Authors lose out (‘authors’ lose ‘out’ = ahrs = RASH) in some spots (RASH).