<P> Robert soldiered on in his primary campaign, but eventually conceded defeat to the frontrunner, a deep conservative who had engaged in what Robert and Kitty saw as dirty tricks . He asked Robert to be his running mate, much to Kitty's disgust . Robert considered the idea, but ultimately rejected him . In a later episode, Kitty is watching a newscast about the inauguration of Barack Obama, signaling that the show takes place in real time with the actual winner of the race, despite the fictional candidates in this show . </P> <P> Robert announces his candidacy for governor of California shortly before suffering a heart attack on the way to see his new adopted baby at the hospital . His recovery is a source of tension to his marriage . </P> <P> Robert steps down as Senator and his soon to be vacant seat is vied for by his wife Kitty, who during the first half of the season battles (and enters remission for) stage 3 lymphoma . Though his marriage with Kitty faces a number of bumps, he spends this season developing his skills as a supportive husband . Robert and Kitty renew their vows before her bone marrow transplant . In the season 4 finale, it's revealed that Robert's heart has been acting up again and he's taken to the hospital following chest pains at dinner . The following night, his car strikes a truck as they are returning home . He was last shown with a gaping head wound, unable to communicate with Kitty and eventually dies . </P> <P> A year later, Robert is still in a coma with Kitty tending to him, refusing to let him go . The entire family is doubtful of his recovery chances and Justin finally tells Kitty that Robert wouldn't want this, using his last words to help Holly as proof . Kitty realizes he's right and shuts off Robert's life support . </P>

When does robert die in brothers and sisters