Step 1: Differentiate between "illicit" and "elicit".
These are homophones (words that sound the same but have different meanings and spellings).
Illicit (adjective): Forbidden by law, rules, or custom; illegal.
Elicit (verb): To evoke or draw out a response, answer, or fact from someone.
Step 2: Analyze the context of the sentence.
The government was trying to draw out or gather support for the bill. This requires the verb "elicit". The word "illicit" (illegal) does not make sense in this context.
Step 3: Choose the correct form.
The sentence uses the base form of the verb after "tried to". Therefore, "elicit" is the correct choice.