"The FBI speculates that the [person who hired Steele] was likely looking for information that could be used to discredit [Clinton's] campaign."
Should be [Trump's]
Direct reference is to "Candidate #1"
Rest of FISA App appears to indicate that's Trump. And we know Steele was hired to research then-candidate Trump.
assets.documentcloud.org/documents/4614…
"Page is a former foreign policy advisor to a candidate for U.S. President (Candidate #1)"
Candidate #1 = President Trump