For incumbent Democratic Senator Blanche Lambert Lincoln, the opponents are interchangeable at this point in her bid for reelection in Arkansas. New Rasmussen Reports polling in the state finds her stuck in the mid-30s against any of five Republican opponents.

Her GOP rivals, including Congressman John Boozman who is expected to enter the race on Saturday, all earn roughly 50% of the vote against the two-term Democrat.

But worse for Lincoln in the latest survey is that her numbers continue to fall. In September and December, her support was between 39% and 41% in these match-ups. Last month, it slipped to 38% or 39% support against any of four Republicans. Now, her support ranges from 33% to 36%.

Boozman, the newest entrant in the race, runs strongest among likely voters in Arkansas for now, beating Lincoln by 19 points, 54% to 35%. State Senator Gilbert Baker also leads Lincoln by 19, 52% to 33%. State Senate Minority Leader Kim Hendren posts a 51% to 35% lead over the incumbent.

Curtis Coleman, a private businessman, also runs ahead of Lincoln 50% to 34%. Tom Cox, head of the Arkansas T.E.A. Party, has a 50% to 36% lead over Lincoln.

In all five match-ups, the number who prefer some other candidate or are undecided falls in single digits.

The similarity of all these spreads makes it clear that this race continues to be all about Lincoln rather than a reflection of voter support for any of those who are challenging her.

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Lincoln was clearly hurt in previous surveys by her key role in advancing for debate in the Senate the national health care plan proposed by President Obama and congressional Democrats. But she has since been more critical of the plan which now appears to have run aground in Congress following the upset GOP Senate win in Massachusetts earlier this month. Most Arkansas voters have been strongly opposed to the plan for months.

Like most of the country, voters in Arkansas also continue to suffer economically despite the costly economic measures approved by Congress over the past year.

Thirty-three percent (33%) of Arkansas voters rate their personal finances as good or excellent, while 24% say they are poor. But 56% say their finances are getting worse, compared to just 11% who say they are improving.

Lincoln’s reelection bid isn’t helped by the president’s numbers either. Obama lost Arkansas to John McCain by 20 points, 59% to 39%, in November 2008. But voters in the state are even more critical now. Thirty-three percent (33%) at least somewhat approve of the president’s job performance, while 66% disapprove. Those who strongly disapprove of the job the president is doing outnumber those who strongly approve by three-to-one – 59% to 20%. This is far more negative that Obama’s job approval ratings nationally in the Rasmussen Reports daily Presidential Tracking Poll.

Twenty-one percent (21%) of Arkansas voters have a very favorable opinion of Lincoln, but 43% view her very unfavorably. The latter number in particular is telling since her opponents are so little known. With the exception of Boozman, the number with very favorable or very unfavorable views of her opponents remains in single digits.

For Boozman, very favorables are 24%, while very unfavorables add up to eight percent (8%).

At this point in a campaign, Rasmussen Reports considers the number of people with a strong opinion more significant than the total favorable/unfavorable numbers.

Fifty-four percent (54%) in Arkansas say it is possible to balance the federal budget without raising taxes. Twenty-four percent (24%) disagree.

Forty-seven percent (47%) favor an across-the-board income tax cut for all Americans, but 30% are opposed. However, 66% believe cutting taxes is a better way to create jobs than increasing government spending. Only nine percent (9%) say an increase in spending is better, and 17% say neither works.

Forty percent (40%) say the United States and its allies are winning the war on terror, but 26% think the terrorists are ahead. Nineteen percent (19%) say it’s a draw. Thirty-seven percent (37%) of voters in Arkansas say the United States is safer today than it was before the September 11, 2001 terrorist attacks, but 44% disagree.

For Lincoln, the one bright spot for now is that 73% approve of the job Democratic Governor Mike Beebe is doing, including 22% who strongly approve.

Other Democratic Senate incumbents who currently trail their challengers include Harry Reid in Nevada, Michael Bennet in Colorado and Arlen Specter in Pennsylvania. Barbara Boxer from California, Evan Bayh of Indiana and Russ Feingold of Wisconsin find themselves in more competitive races than usual.

Republicans lead open-seat Senate races in Delaware, Florida, Kentucky, Missouri, New Hampshire, North Dakota and Ohio. Democrats lead in Connecticut, and the race is close in Illinois. A commentary by political analyst Larry Sabato, suggests that if the election were held today, “The (59-seat) Democratic majority in the Senate would be reduced to just 52 seats.”

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