Regarding "hating" a politician, I think and indeed experience that it is possible to do so even when your best knowledge of them is to listen to their speeches and hear them interviewed and to learn their beliefs and policies for the country. One can gain a huge amount of information and when a person is arrogant, does not care about very hard-working low-paid people, or people living in poor housing conditions or people whom he would place outside access to health care... well, you start to dislike them, then you find them threatening, then you hate them for being so cruel and only caring about themselves and their own types of well-paid well-off people.
I have met my MP, well whether she is still our MP is a moot point, since the Conservatives have lent us the lady next door to share for now. Ours was voted in as a Conservative. The local party members worked extremely hard for her. She owes her success in politics to these dedicated Tories (I'm not one) who gave up their time and spent their own money to support her so she gained a seat in the first instance. Then suddenly they learned she had bailed out on them and was no longer a Conservative but had begun some other "Let's hop off the sinking ship with the other rats" party. Anyway, I met her. In my house. I wrote about it. People said "She's very litigious". In other words she'll say it's not true and sue you. But her Local Conservative Office Man was here too. Maybe he would like to support my TRUE description of all that passed when she came here. For she behaved in a truly strange and alarming way. She was shouting that my furniture was in the wrong places for a start. She shouted "You do not have paint, you know you don't!" because I had decorating materials prepared ready. I assumed this was because I am disabled... She was entirely crazy, unreasonable, screaming, yelling things such as "What's that suitcase thing? What's it doing there?" It was a trumpet case. I had brought it down to oil the trumpet. Also "What is this ugly thing? Why is it here?" and "NO! that is NOT a table, you know it is not!" when I told her the round thing against the wall was the top of the oak table. Anyway what business was it of hers? She seemed to have "lost it" in terms of knowing why she had come to my house which was because I had a terrible experience with a dreadful builder. So of course, I can honestly say, along with a great many people who know her personally, I absolutely detest her.