▁the ▁campaign , ▁making ▁it ▁one ▁of ▁the ▁most ▁expensive ▁House ▁races ▁in ▁the ▁ 2 0 0 8 ▁election . ▁Sch auer ▁out sp ent ▁Wal berg ▁by ▁nearly ▁$ 3 0 0 , 0 0 0 . ▁▁ 2 0 1 0 ▁ ▁On ▁July ▁ 1 4 , ▁ 2 0 0 9 , ▁Wal berg ▁announced ▁that ▁he ▁would ▁run ▁for ▁his ▁old ▁con gression al ▁seat ▁and ▁challenge ▁Democratic ▁inc umb ent ▁Mark ▁Sch auer . ▁He ▁defeated ▁Mar vin ▁Carl son ▁and ▁Brian ▁Ro oney ▁in ▁the ▁Republican ▁primary . ▁ ▁Prior ▁to ▁the ▁election , ▁pol ling ▁showed ▁the ▁race ▁as ▁a ▁dead ▁heat . ▁Wal berg ▁defeated ▁Sch auer ▁ 5 0 % – 4 5 %. ▁▁ 2 0 1 2 ▁ ▁Wahl berg ▁defeated ▁Dem ocrat ▁Kurt ▁H askell ▁ 5 3 % – 4 3 %. ▁▁ 2 0 1 4 ▁ ▁Wal berg ▁defeated ▁former ▁Democratic ▁State ▁Represent ative ▁Pam ▁By r nes ▁in ▁the ▁general ▁election ▁with ▁ 5 4 % ▁of ▁the ▁vote . ▁▁ 2 0 1 6 ▁ ▁Wal berg ▁ran ▁for ▁re - e lection ▁in ▁ 2 0 1 6 . ▁He ▁defeated ▁Doug ▁North ▁in ▁the ▁Republican ▁primary ▁on ▁August ▁ 2 , ▁ 2 0 1 6 . ▁State ▁Represent ative ▁G ret chen ▁D ris k ell ▁was ▁the ▁l one ▁Dem ocrat ▁to ▁file ▁for ▁election . ▁In ▁the ▁general ▁election , ▁Wal berg ▁defeated ▁D ris k ell ▁with ▁