In the last four live interview polls that broke down results by partisanship,1 Trump averaged 85 percent support against Hillary Clinton among respondents who identified as Republicans. Clinton won just 7 percent among GOP respondents.2 Trump’s share of the Republican vote at this point in the campaign is right in line with past nominees. Here’s an average of three live interview polls3 conducted right after each Republican nominee since 1980 wrapped up his primary by eliminating his last serious foe…

Polarization notwithstanding, it’s at least a little amazing how quickly and easily Trump — who has bucked party orthodoxy on a range of issues — consolidated the GOP vote. The fact that Republican voters are treating him as any other nominee may give him a floor on his support, ensuring he doesn’t get blown out by Clinton. Even if Clinton wins most voters in the center of the political spectrum, it’ll be difficult for her to run up the score if Trump is pulling a similar percentage of Republicans as past nominees did. The last time either party’s nominee won the general election by double digits (1984), he pulled a quarter of the opposing party’s voters.