Former Republican presidential candidate Ron Paul's son has officially entered the GOP Senate primary in Kentucky.
Rand Paul's campaign manager turned in the candidacy papers and a $500 check to the secretary of state's office on Wednesday afternoon.
Rand Paul, a Kentucky eye surgeon, has raised more than $1.7 million for his campaign largely by reaching out to people who had supported his father's unsuccessful presidential bid.
He's running for the seat being vacated by fellow Republican Jim Bunning.
Kentucky has trended Republican in recent years, with both of its Senate seats and four of six House seats in GOP hands.
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