ment ▁b anning ▁gay ▁marriage   – ▁an ▁issue ▁he ▁has ▁said ▁should ▁be ▁up ▁to ▁states ▁to ▁decide . ▁As ▁a ▁state ▁legisl ator , ▁he ▁also ▁supported ▁Massachusetts ' ▁ground bre aking ▁legisl ation ▁to ▁provide ▁universal ▁health care ." ▁However , ▁in ▁ 2 0 1 0 , ▁Brown ▁was ▁end ors ed ▁by ▁the ▁conserv ative ▁Te a ▁Party ▁Express . ▁After ▁being ▁elected , ▁Brown ▁said ▁that ▁"[ he ' s ] ▁not ▁a ▁Te a ▁Party ▁member ." ▁As ▁a ▁United ▁States ▁Senator , ▁Cong r essional ▁Qu arter ly ▁found ▁that ▁Brown ▁voted ▁with ▁President ▁Ob ama ' s ▁ 2 0 1 1 ▁positions ▁on ▁legisl ation ▁ 6 9 . 6 % ▁of ▁the ▁time . ▁According ▁to ▁G ov Track , ▁Brown ▁was ▁the ▁third ▁most ▁moder ate ▁Republican ▁Senator ▁during ▁his ▁ten ure ▁in ▁the ▁Senate . ▁He ▁has ▁a ▁lifetime ▁ 5 3 % ▁conserv ative ▁rating ▁from ▁the ▁American ▁Conserv ative ▁Union ▁and ▁a ▁ 5 0 % ▁liberal ▁rating ▁from ▁the ▁Americans ▁for ▁Democratic ▁Action . ▁In ▁ 2 0 1 2 , ▁the ▁non - part isan ▁National ▁Journal ▁gave ▁him ▁a ▁rating ▁of ▁ 5 4 % ▁conserv ative ▁and ▁ 4 6 % ▁liberal . ▁ ▁F is cal ▁policy ▁Brown ▁is ▁a ▁sign er ▁of ▁Americans ▁for ▁Tax ▁Reform ' s ▁Tax p ayer ▁Prote ction ▁P ledge . ▁In ▁a ▁letter ▁to ▁the ▁editor ▁of ▁The ▁Boston ▁Glo be ▁written ▁on ▁January ▁ 8