coattails (n.) Look up coattails at Dictionary.com
also coat-tail, c.1600, from coat (n.) + tail (n.). In 17c., to do something on one's own coattail meant "at one's own expense. Meaning "power of one person," especially in politics, is from 1848 (in a Congressional speech by Abraham Lincoln, in reference to Andrew Jackson); expression riding (someone's) coattails into political office is from 1949.