(CNN) - Vice President Joe Biden is lending a helping hand to five Western House Democrats who may face competitive re-election races next year.
The vice president attends a political event in Phoenix Monday for Rep. Ann Kirkpatrick and Harry Mitchell. Kirkpatrick, a freshman, won her seat in Arizona's 1st congressional district by 17 points. Mitchell, a two-term representative, won re-election last year by 9 points. Both the non-partisan Rothenberg Political Report and Cook Political Report are keeping their eyes on both races.
Later Monday, Biden attends an event in Albuquerque, New Mexico for Reps. Harry Teague and Martin Heinrich. Republicans are gunning to win back Teague's seat, in New Mexico's 2nd congressional district. Teague, a freshman, won the district by 12 points last year. Both the Rothenberg and Cook Political Reports consider the race a tossup. Heinrich is also a freshman who won his race in 2008 by 12 points.
On Sunday, the vice president was the main attraction in Las Vegas at a fundraiser for freshman Rep. Dina Titus. Last year, Titus won Nevada's 3rd congressional district in a three-way contest, grabbing 47 percent of the vote. She could face a tough re-election next year.
According to a pool report of the event, Biden said he had campaigned in 54 House districts this year. The vice president added that with Titus' help, "we're going to be riding into, not a sunset, but a sunshine."
The Connecticut Democratic Party announced Monday that Biden will join Sen. Chris Dodd for a fundraising event in Hartford on Friday, December 11. The five-term senator is up for re-election next year and is fighting for his political life.
A Quinnipiac University survey released Thursday morning suggests that 54 percent of Connecticut voters disapprove of the job Dodd's doing as their senior U.S. senator, with 4 in 10 giving him a thumbs-up. The 54 percent disapproval rating is up 5 points from September. The poll also indicates that by 53 percent to 39 percent, Connecticut voters don't think Dodd deserves to be re-elected next year. According to the survey, Dodd is losing or tied with all of his potential Republican challengers in hypothetical 2010 general election matchups.
Follow Paul Steinhauser on Twitter: @psteinhausercnn