Independent polling in the race has been scarce so far. But Ryan has staked out a narrow 3-point edge in an internal poll for his campaign obtained exclusively by POLITICO, taking 48 percent support to Vance’s 45 percent, with 7 percent undecided. The survey, conducted July 21-28 by Impact Research, polled 800 likely general election voters and has a margin of error of plus or minus 3.5 percentage points.

The lead is a product of a lopsided campaign so far: Ryan spent more than $8 million on advertisements, including $6.5 million on television since May. But until this week, Vance’s campaign had been AWOL from the airwaves for that entire time. Ryan has also remained far ahead of Vance in the cash dash, in part thanks to an aggressive small-dollar donation campaign…

Ironically, the spate of negative stories surrounding Vance’s campaign in recent weeks — that he is struggling with fundraising and his own party is questioning whether Ryan is out-hustling him on the airwaves — may have had a net positive effect on Vance’s campaign. Fundraising has picked up since, and national Republicans have stepped in to start buying ads in the race.

On Thursday, Vance joined Trump at his golf club in Bedminster, N.J., where he raised roughly $300,000 holding a golf fundraiser, according to a person with knowledge of the event.