2 syllables:
flection, flexion, lection, lektion, rection, section, sektion, vection

3 syllables:
abjection, adjection, advection, affection, annexion, aspection, bijection, bijektion, bilection, bisection, bolection, brass section, c-section, collection, complection, complexion, confection, connection, connexion, contection, convection, correction, cross-section, crosssection, cross section, csection, defection, deflection, deflexion, dejection, despection, detection, dilection, direction, disection, disjection, dissection, e-rection, effection, ejection, election, emplection, erection, evection, exection, exsection, implexion, infection, inflection, inflexion, injection, injektion, insection, inspection, inspecttion, invection, killection, neglection, objection, perfection, plane section, porrection, prelection, profection, projection, projektion, prospection, protection, provection, reed section, refection, reflection, reflexion, rejection, resection, respection, retection, selection, sports section, string section, subjection, surjection, suspection, trajection, transection, transexion, transfection, transsection, transvection, trisection

4 syllables:
anteflexion, art collection, by-election, bye-election, byelection, bye election, by election, by selection, callisection, circumflection, circumflexion, circumspection, circumvection, codirection, coinfection, coin collection, conic section, cross-infection, deselection, desinfektion, disaffection, discomplexion, disconnection, disinfection, disinsection, dorsiflexion, experrection, extrospection, eye infection, genuflection, genuflexion, golden section, hemisection, hyperflexion, imperfection, inconnection, incorrection, indirection, insubjection, insurrection, intellection, interjection, internection, intersection, introjection, introspection, irreflection, lipofection, loan collection, map collection, map projection, misaffection, misdirection, namcollection, nonelection, postelection, pre-election, precollection, predilection, preelection, preselection, pretervection, quadrisection, quarter section, re-election, recollection, reconnection, redirection, reelection, reinfection, reinjection, reinspection, reselection, ressurection, resubjection, resurection, resurrection, retroflection, retroflexion, retrojection, retrospection, rhythm section, self-correction, self-direction, self-protection, self-reflection, self-selection, semiflexion, sentisection, sound reflection, stage direction, stamp collection, subinfection, suprainfection, t-connection, t-intersection, tax collection, to perfection, trade protection, trash collection, trumpet section, unperfection, vasosection, venesection, venisection, vivisection

5 syllables:
3dconnexion, antirejection, auto-infection, autocorrection, autoinfection, bottle collection, caesarean section, change of direction, clarinet section, conic projection, error-correction, focal infection, fungal infection, garbage collection, giving protection, house of correction, hypercorrection, incircumspection, interconnection, interreflection, lateroflexion, magnetofection, mental rejection, microdissection, microinjection, misrecollection, neuroprotection, overcorrection, overprotection, piloerection, rental collection, retroreflection, right of election, sense of direction, signal detection, superinfection, superinjection, superreflection, teleconnection, undercorrection, vertical section, vincent's infection, violin section, writ of election

6 syllables:
angle of reflection, antivivisection, conical projection, general election, hepatoprotection, horizontal section, mercator projection, mutual affection, natural selection, offering protection, point of intersection, primary election, radioprotection

7 syllables:
alien resurrection, btnhresurrection, dependency injection, gnu compiler collection, intravenous injection

8 syllables:
coefficient of reflection, opportunistic infection, the criterion collection, urinary tract infection

9 syllables:
economically weaker section

10 syllables:
2017 german federal election, next italian general election

11 syllables:
2021 dutch general election

12 syllables:
2019 indian general election, 2021 german federal election

13 syllables:
2021 chilean general election

3 syllables:
cliff penstemon, fringed gentian