Answer :
The main idea of the speech is "Voters should be concerned about the character of the speaker's opponent."
The speaker wants to win an election, so that is why he is giving a speech to get the votes from voters in election. The other point or the main idea of the speech is that before giving votes to someone you should consider the character of the opponent of speaker.
The speaker wants to win an election, so that is why he is giving a speech to get the votes from voters in election. The other point or the main idea of the speech is that before giving votes to someone you should consider the character of the opponent of speaker.