To what extent are voters responsible for the actions of politicians?

Suppose that a candidate announces his plans and actions for next term before the election. Are the people who vote for that candidate morally sanctioning and/or responsible for those actions, for better or worse? For example, you vote for a candidate who supports de-regulation and ending social welfare programs, even though he's completely against abortion in all circumstances, even when that might result in the woman's death. Since you, as a voter, knew his position when you voted for him, aren't you partially responsible for any deaths of women caused by his anti-abortion policies?