er ▁George ▁Wal bridge ▁Per kins . ▁Though ▁Pin ch ot ▁campaign ed ▁extens ively ▁for ▁Ro ose vel t , ▁Ro ose vel t ▁and ▁T aft ▁were ▁both ▁defeated ▁by ▁Dem ocrat ▁Wood row ▁Wilson . ▁ ▁Pin ch ot ▁continued ▁to ▁affili ate ▁with ▁the ▁Progress ives ▁after ▁the ▁ 1 9 1 2 ▁election , ▁working ▁to ▁build ▁the ▁party ▁in ▁Pennsylvania . ▁He ▁ran ▁as ▁the ▁Progress ive ▁nom ine e ▁in ▁the ▁ 1 9 1 4 ▁U . S . ▁Senate ▁election , ▁but ▁was ▁defeated ▁by ▁inc umb ent ▁Republican ▁Senator ▁Bo ies ▁Pen rose . ▁The ▁Progress ive ▁Party ▁col lapsed ▁after ▁Ro ose vel t ▁refused ▁to ▁run ▁in ▁the ▁ 1 9 1 6 ▁president ial ▁election , ▁and ▁Pin ch ot ▁subsequently ▁re - jo ined ▁the ▁Republican ▁Party . ▁He ▁supported ▁Republican ▁Warren ▁G . ▁Hard ing ' s ▁successful ▁campaign ▁in ▁the ▁ 1 9 2 0 ▁president ial ▁election , ▁but , ▁despite ▁some ▁spec ulation ▁that ▁he ▁would ▁be ▁appointed ▁as ▁Secretary ▁of ▁Agricult ure , ▁did ▁not ▁receive ▁a ▁position ▁in ▁Hard ing ' s ▁administration . ▁ ▁Activ ism ▁and ▁forest ry ▁▁ ▁After ▁leaving ▁office ▁in ▁ 1 9 1 0 , ▁Pin ch ot ▁took ▁up ▁leadership ▁of ▁the ▁National ▁Conserv ation ▁Association ▁( N CA ), ▁a ▁conservation ist ▁non - g overn ment al ▁organization ▁that ▁he ▁had ▁helped ▁found ▁the ▁previous ▁year . ▁The ▁organization , ▁which ▁ceased ▁operations ▁in