I have made up the examples below.
(1) During his political career, people are wondering what factors lead to his current success.
(2) During his political career, people are wondering what factors have led to his current success.
I am not sure which tense of "lead" I should use. Thank you very much.
During his political career people have been wondering what factors have led to his current success. As shown above. CJ
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During his political career people have been wondering what factors have led to his current success.
As shown above.
CJ