Ben Carson Leads in National Polling

Dr. Ben Carson now leads Donald Trump in the average of national polling — the first time since mid-July Trump has been out of the top spot in the Real Clear Politics computation. 

The averaging of the last four recent polls shows the retired pediatric neurosurgeon with 25.3 percent support, to Trump's 24.3 percent.

According to the Real Clear Politics sites, the last time Trump ran second top anyone in a national averaging was in July, when former Gov. Jeb Bush topped the list.

Will Jordan, elections editor for YouGovUS, tweeted a diagram of the polling changes: 

there it is pic.twitter.com/KEfvsmUNMr

— Will Jordan (@williamjordann) November 4, 2015

while national correspondent John Roberts of Fox News called the shift "seismic."

Seismic shift in the polls. @RealBenCarson leads @realDonaldTrump in the RCP national average. Trump still leads NH, SC & FL

— John Roberts (@johnrobertsFox) November 4, 2015

Though Carson is leading in early voting state Iowa, Trump dominates in other states, including New Hampshire, South Carolina and Nevada.