, ▁Madrid , ▁on ▁ 2 0 ▁May , ▁where ▁thousands ▁gathered ▁in ▁support ▁of ▁the ▁initi ative . ▁ ▁Support ▁Comp rom ís ▁enthus iast ically ▁wel com ed ▁the ▁motion ▁and ▁announced ▁their ▁support ▁to ▁Unidos ▁P ode mos . ▁Republican ▁Left ▁of ▁Catal onia ▁( ER C ) ▁was ▁sympath etic ▁to ▁the ▁initi ative , ▁but ▁condition ed ▁it ▁on ▁P ode mos ▁supporting ▁an ▁independence ▁refer endum ▁to ▁be ▁held ▁in ▁Catal onia . ▁This ▁same ▁condition ▁was ▁demanded ▁by ▁the ▁Catal an ▁European ▁Democratic ▁Party ▁( P De CAT ), ▁which ▁non eth eless ▁remained ▁more ▁ske pt ical ▁and ▁argued ▁that ▁they ▁would ▁" evalu ate ▁the ▁' pro s ▁and ▁cons '" ▁of ▁supporting ▁the ▁motion ▁before ▁taking ▁a ▁decision . ▁E H ▁Bil du ▁showed ▁their ▁willing ness ▁to ▁support ▁the ▁initi ative ▁if ▁P ode mos ▁re ass ured ▁their ▁commit ment ▁to ▁the ▁" right ▁to ▁decide ", ▁which ▁they ▁already ▁cont empl ated ▁in ▁their ▁election ▁manif esto . ▁The ▁motion ▁also ▁received ▁the ▁support ▁of ▁trade ▁un ions ▁U GT ▁and ▁C CO O , ▁which ▁vo iced ▁their ▁" dis app oint ment ▁and ▁sad ness " ▁with ▁opposition ▁parties ▁not ▁backing ▁it . ▁ ▁The ▁P SO E ▁initially ▁announced ▁that ▁they ▁would ▁vote ▁against ▁the ▁motion , ▁arg uing ▁that ▁it ▁was ▁a ▁" dis res pect " ▁and ▁that ▁it ▁was ▁designed ▁to ▁inter f ere ▁with ▁the ▁party ' s ▁primary ▁election , ▁scheduled ▁for