AUGUSTA — Democratic activists and candidates are arriving at the Augusta Civic Center this afternoon for the start of a three-day state convention.

As many as 1,500 delegates will fill the hall to hear speeches by party leaders and congressional candidates and elect national delegates and national committee members.

Democrats, unified behind President Barack Obama, are not expected to fight over control of the convention the way Ron Paul and Mitt Romney supporters did during the contentious Republican convention last month. The angry rhetoric this weekend is likely to be aimed at Gov. Paul LePage and the Republican majority in the Legislature.

Members of the party’s platform committee are meeting now to consider what are considered routine revisions in language, but no major changes in policy. The full convention will open later this afternoon with speeches by Chellie Pingree and Mike Michaud, both of whom are seeking re-election this fall.

Former Georgia Sen. Max Cleland, a disabled Vietnam War veteran, was scheduled to speak today but canceled because of a schedule change.

On Saturday, Democrats will hear from the party’s four candidates in the June 12 U.S. Senate primary. They also will hear a keynote address from Maryland Gov. Martin O’Malley, who is considered a potential presidential candidate in 2016.