FBI news too late to sway millions of early voters

WASHINGTON (AP) — Donald Trump's supporters may hope that last week's FBI revelation about the Hillary Clinton email investigation might give the Republican's campaign a boost.

[...] it's already too late for Trump to win over around a fifth of American voters, including many of the most coveted ones: those in battleground states.

Tens of millions of voters had already cast ballots before news broke Friday that the FBI was examining newly discovered emails that might be pertinent to the dormant investigation of Clinton's use of a private email server.

The breakdown of those voters by party affiliation, race and other factors points to an advantage for Clinton.

Overall, early voting — by mail and at polling stations — is underway in 37 states.

GOP analysts say Democrats now hold the advantage because the latter party typically runs up big advantages during early in-person voting, which began last week.

Democrats have been running further behind compared to 2012 levels, although there were indications of some Democratic momentum before Friday's FBI news.

The percentage breakdown in ballots cast by party is generally similar to 2012, when Obama won the state based on his strength in the early vote.