Who has not heard the term 'profit motive'?
'Election motive' may be a neologism, a newly-coined word.
The former moves capitalists; the latter moves politicians.
The SCOTUS in the 1970s held that money is speech. In 2010 SCOTUS held that corporations (aka paper persons) are persons with the rights of natural persons. SCOTUS needs to see that where these terms intersect, corruption is inevitable.