Complex sentence: Where there is ministerial responsibility, the accountable Minister is expected to take the blame and ultimately resign, but the majority or coalition within Parliament of which the Minister is part, is not held to be answerable for that Minister's failure.
Split into simpler sentences: Where there is ministerial responsibility, the accountable Minister is expected to take the blame, and ultimately resign. But the majority or coalition within Parliament of which the Minister is part, is not held to be answerable for that Minister's failure.