영어 문장 해석 부탁드려요

아래 문장들의 해석이 궁금해요.
1. It is the end of a dynasty because this fellow cannot make up his mind.
2. I think in the back of his mind.
3. But the governing coalition also gave voters plenty of other reasons to want change, including a sputtering economy, a host of corruption scandals, and a weak prime minister.
4. Congress Party insiders said in interviews that to win, the party needed to tar the opposition as an unacceptable and even dangerous alternative.