Complex sentence: The right formed a coalition, which was preferable under the new electoral system enacted earlier in the year; it spent large amounts on campaigning to reverse the reforms that had been made during the Republic and to free political prisoners.
Split into simpler sentences: The right formed a coalition, as was favoured by the new electoral system enacted earlier in the year. It spent large amounts on campaigning to reverse the reforms that had been made during the Republic and to free political prisoners.