Factors that determine how powerful/popular a prime minister is

• whether you can control your cabinet
• spin doctors - how effective they are
• dominant & charismatic personality
• majority
• media must support you, not turn against you - keep the media on your side, using spin doctors
• to be good at PMQs
• how crisis is dealt with
• strength of the opposition
• how well they use their formal power

THERESA MAY (2016-2019):

• found it impossible to control the cabinet
• kept breaking CCR - making her appear weak
• doesn't have a dominating/charismatic personality - lacked charisma
• she had 2 bad spin doctors (Nick Timothy, Fiona Hill)
• she had a majority when she was elected, but lost her majority after the election
• …