The answer is <span>making a campaign donation to a candidate
A political participation is considered as conventional if it's conducted in the manner that considered as 'acceptable' by most people in society. (such as voting and making donation)
A political participation could be considered as Unconventional if it's considered Hostile and inappropriate even though it's still considered as legal.
(such as demonstration or creating a hit piece article on other candidates)
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<span>Advertising. Advertising tends to be extremely expensive but does not always provide much returns, and often goes completely ignored by the target audience or only reaches the people you already knew about.</span>
He was a renaissance mathematician and astronomer
