Clinton's Post-Convention 'Bounce' Trumps Trump's

Hillary Clinton’s post-convention lead over Donald Trump has continued to grow as more polls have come in, according to FiveThirtyEight Newsletter.

Initial polls conducted after the Democratic National Convention suggest Clinton received a convention bounce in the high single digits. That exceeds Donald Trump, who came out of the Republican National Convention with a 3-4 percentage point bounce. A bounce is the net gain in a candidate's standing in the polls.

According to FiveThirtyEight, here's a roundup of post-convention polls seen so far:

-- A CBS News poll has Clinton ahead by 5 percentage points, in the version of the poll that includes third-party candidates (which is the version FiveThirtyEight uses). Trump led Clinton by 1 point in a CBS News poll conducted just after the RNC, so that would count as a 6-point bounce for Clinton.

-- A Morning Consult poll also showed Clinton up by 5 percentage points, representing a 9-point swing toward her from a poll they conducted last week after the RNC.

-- A RABA Research national poll, conducted on Friday after the convention, has Clinton with a 15-point lead. RABA Research’s national poll has been something of a pro-Clinton outlier. Still, the trend in the poll is favorable for Clinton. She had led Trump by 5 percentage points in RABA Research’s poll just after the RNC, meaning that she got a 10-point bounce.

-- Finally, a Public Policy Polling survey has Clinton up by 5 percentage points. Because PPP did not conduct a post-RNC poll, we can’t directly measure Clinton’s bounce. But their previous national poll, in late June, showed Clinton up by 4 percentage points. Therefore, their data tends to confirm our notion that the conventions may have reset the race to approximately where it was in June, which was a strong month of polling for Clinton.

There are also a couple of national tracking polls that contain some post-convention data, but they aren’t as strong for Clinton so far. The USC Dornsife/Los Angeles Times tracking poll, which has generally shown favorable results for Trump, still shows Trump ahead by 4 percentage points, although Clinton has recovered slightly from a 7-point deficit a few days ago. Note, however, that the USC poll uses a week-long field period, so only about half of its interviews came after the DNC.

Meanwhile, the Ipsos/Reuters tracking poll last released data on Friday, covering interviews from Monday through Friday -- so most of the poll was conducted during the DNC rather than after it. The short version is that their head-to-head poll (without third-party candidates) shows a bounce back to Clinton, while their version with third-party candidates (the version FiveThirtyEight uses) does not. But, says FiveThirtyEight, Ipsos’ data is a bit of a mess right now because they changed their methodology to remove 'neither' as an option in their head-to-head poll.