Republican US presidential candidate Donald Trump has begun to close the gap in a potential general election matchup with Hillary Clinton, the Democratic frontrunner, a new poll has found.
In the CNN/ORC poll released on Wednesday, Trump, who is leading national and early-state polls in the GOP presidential primary race, is now only six points away from the former US secretary of state, a dramatic tightening since July.
The poll found that Clinton is currently leading Trump by 51 percent to 45 percent among voters for the next year election.
About 80 percent of Republicans and Republican-leaning voters now back the real estate billionaire, up from 67 percent last month.
In July, Trump trailed the former first lady by 16 points in a hypothetical general election.
Clinton is ahead of former Florida Governor Jeb Bush by nine points, but is leading Wisconsin Governor Scott Walker by only six points.
However, she is struggling to maintain her lead among potential Democratic voters following her email scandal, the poll showed.
According to the poll, Clinton’s support among Democrats and Democratic-leaning voters is at 47 percent, 9 points down since July.
The poll, which was conducted August 13 to 16, has a margin of error of plus or minus 3.5 percentage points.
As many as 17 Republicans are seeking their party’s nomination for president but only Trump, Walker, Bush, Ted Cruz and Marco Rubio are considered serious contenders.
Clinton is competing against only three Democrats and one independent senator, Bernie Sanders, for the Democratic Party's nomination. Only Sanders is considered at all competitive in the early primaries.
In the CNN/ORC poll, Vermont Senator Sanders gained 10 points since July, and now holds 29 percent support among Democrats and Democratic-leaning voters.