Ignore the daily tracking polls, polls from fly-by-night pollsters and (worst of all) Rasmussen polls. Instead focus on the pollsters that have a proven record of success and take the time to develop sound methodologies and draw samples that truly reflect the voting populace. The Pew poll does this in spades—they are one of the best.
Their new June survey is out, and it shows Hillary with a comfortable 9 point lead.
Clinton 51
Trump 42
Other/DK 7
She leads overwhelmingly with women (+24), while losing men by a much smaller margin (-6). She wins all age groups except for 65+, and demolishes among 18-30 year-olds (+30). She crushes with Latinos (+42) and African Americans (+84) and loses whites only by single digits (-8).
As noted by a commenter below, the lead holds with Gary Johnson added as an option (45-36-11)
A great feature of this release is cross-tab comparisons with June 2008 and June 2012. Interestingly (and promisingly), the June margins for 2008 (Obama +8) and 2012 (Obama +4) almost completely mirror the actual results of those elections.