Susan Davis reports on congressional races.

A new Alaska poll finds long-time Republican incumbents, Sen. Ted Stevens and Rep. Don Young, trailing against their likely opponents this November.

Both Stevens and Young have been swept up in a far-reaching federal corruption investigation, and the scandals are taking a toll on their re-election prospects. Neither has been charged with any wrongdoing.

The survey, conducted in early May by Anchorage firm Hellenthal and Associates with a 6% margin of error, shows Democratic Anchorage Mayor Mark Begich leading Stevens 51%-44%. The poll found that while Stevens remains popular among many of the state’s residents, he also had a 40% negative rating, compared with 16% for Begich.

Stevens is expected to win the Republican primary on Aug. 26, and Begich is expected to win the Democratic primary, although he faces a crowded primary field.

Young may face more trouble in beating his Republican primary opponent, Lt. Gov. Sean Parnell. Parnell has a thin 37%-34% lead over Young. Two Democrats, state House Minority Leader Ethan Berkowitz and Diane Benson are also seeking the seat. Berkowitz is leading Benson. In a general election match-up, Berkowitz has a healthy margin over Young, 58%-38%. About one-third of respondents have a positive view of Young, while a majority, 52%, have a negative opinion.

A majority of Alaska voters consider themselves independent voters, while 27% identifed as Republicans and 22% as Democrats.