enlarge John Patriquin/Staff Photographer

Portland resident Carol Holly reacts after casting her ballots as warden Martha H. Giles looks on Tuesday at Reiche School in Portland.

11:30 p.m. update — Democrat Chellie Pingree and Republican Charlie Summers have won the right to face each other in the fall for the 1st Congressional District seat.

Pingree, a former Senate majority leader who later served as national chair of Common Cause, raised the most money on her way to winning a hard-fought six-way race.

With 57 percent of precincts reporting, Pingree had 44 percent of the vote. Adam Cote, a Portland lawyer and Iraq war veteran, had 26 percent.

On the Republican side, Summers, a Scarborough resident who recently returned from duty in Iraq, turned back a challenge by Dean Scontras of Eliot.

The race was tight early, but Summers gradually built his lead and was up 60 percent to 40 percent with more than half of precincts reporting.

In the U.S. Senate race, Tom Allen rolled to a win in the Democratic primary, winning 86 percent of the vote with 75 percent of precincts reporting.

10:15 p.m. update — Charlie Summers and Chellie Pingree have distanced themselves from the rest of the 1st Congressional District primary pack.

Summers is leading his Republican primary opponent, Dean Scontras, with 56 percent of the vote, with 39 out of the district’s 191 precincts reporting, based on an Associated Press tally.

Pingree is ahead on the Democratic side with 43 percent of the vote. Adam Cote and Michael Brennan are second and third with 26 percent and 13 percent of the vote, respectively.

In Portland, Pingree is leading with 37.3 percent of the Democratic primary vote with 11 of 16 precincts reporting.

Summers is ahead of Scontras in the city with 65.7 percent of the Republican primary vote.

Pingree and Summers also won Windham, where Summers had 64.5 percent of the vote and Pingree got 37 percent. Cote had 32 percent.

10 p.m. update — Chellie Pingree and Charlie Summers carried South Portland in the 1st District Congressional primary.

Unofficial election results from the city show Pingree as the winner on the Democratic side, with 41 percent of the vote. Summers beat Dean Scontras by a 2-to-1 margin.

9:35 p.m. update — Adam Cote and Charlie Summers carried Westbrook today in the 1st District contests, according to unofficial election returns from the city.

Cote won the city with 37 percent of the vote on the Democratic side. Summers claimed the city over Republican challenger Dean Scontras with 62.6 percent of the vote.

9:25 p.m. update — The Republican 1st Congressional District primary is shaping up to be the tightest high-profile race of the night.

Charlie Summers leads Dean Scontras with 52.6 percent of the vote with 18 percent of statewide precincts reporting, according to unofficial results provided by the Bangor Daily News.

Summers has a big lead in Portland, with 61 percent of the vote with six of 16 precincts reporting, according to unofficial election returns from the city.

On the Democratic side, Chellie Pingree and Adam Cote are pulling ahead of the rest of the field, with 41.9 and 28.3 percent of the districtwide vote, respectively.

Pingree is leading with 38.75 percent of the vote in Portland. Michael Brennan (21.6 percent) and Ethan Strimling (19.9 percent) are running second and third in the city, respectively.

9:20 p.m. update — Maine Democrats chose Rep. Tom Allen over political newcomer Tom Ledue in a landslide in Tuesday's U.S. Senate primary, while both parties settled hard-fought races to set the stage for November's 1st congressional district election.

Allen, a six-term congressman from Portland, was well ahead of Ledue, a high school administrator from Springvale, in early unofficial tallies. Allen will face two-term Sen....