She is a Senator for NY. To evaluate her you have to look at her voting record. The information below I copied and pasted from her campaign website and "On The Issues" website.
From her campaign website:
In 2000, Hillary was elected to the United States Senate from New York. As Senator, Hillary has continued her advocacy for children and families and has been a national leader on homeland security and national security issues.
After the terrorist attacks of September 11, 2001, Hillary worked with her colleagues to secure the funds New York needed to recover and rebuild. She fought to provide compensation to the families of the victims, grants for hard-hit small businesses, and health care for front line workers at Ground Zero. And she continues to work for resources that enable New York to grow, to improve homeland security for New York and other communities, and to protect all Americans from future attacks.
She is the first New Yorker ever to serve on the Senate Armed Services Committee, working to see that America's military has the necessary resources to protect our national security. She has visited troops in Iraq and Afghanistan and at Fort Drum in New York, home of the 10th Mountain Division and other New York bases, as well as at Walter Reed Military Hospital. She has learned first-hand the challenges facing American combat forces. Hillary passed legislation to track the health status of our troops so that conditions like Gulf War Syndrome would no longer be misdiagnosed. She is an original sponsor of legislation that expanded health benefits to members of the National Guard and Reserves and has been a strong critic of the Administration's handling of Iraq.
But Hillary has recognized that we can't ignore our problems at home while we face challenges overseas. She has introduced legislation to tie Congressional salary increases to an increase in the minimum wage, because she believes if America's working people don't deserve a raise, neither does Congress. She has supported a variety of middle-class tax cuts, including marriage penalty relief, property tax relief, and reduction in the Alternative Minimum Tax, and supports fiscally responsible pay-as-you-go budget rules. She helped pass legislation that encouraged investment to create jobs in struggling communities through the Renewal Communities program. She has championed legislation to bring broadband Internet access, which is so important in today's information economy, to rural America.
In the Senate, Hillary has not wavered in her work to expand quality affordable health care to more Americans. She worked to strengthen the Children's Health Insurance Program, which increased coverage for children in low income and working families. She authored legislation that has been enacted to improve quality and lower the cost of prescription drugs and to protect our food supply from bioterrorism. She sponsored legislation to increase America's commitment to fighting the global HIV/AIDS crisis, and is now leading the fight for expanded use of information technology in the health care system to decrease administrative costs, lower premiums, and reduce medical errors.
Her strong advocacy for children continues in the Senate. Some of Hillary's proudest achievements have been her work to ensure the safety of prescription drugs for children, with legislation now included in the Best Pharmaceuticals for Children Act, and her legislation to help schools address environmental hazards. She has also proposed expanding access to child care. She has passed legislation that will bring more qualified teachers into classrooms and more outstanding principals to lead our schools.
Hillary has been a powerful advocate for women in the Senate. Her commitment to supporting the rights guaranteed in Roe v. Wade and to reducing the number of abortions by reducing the number of unwanted pregnancies was hailed by the New York Times as "frank talk...(and) a promising path." Hillary is one of the original cosponsors of the Prevention First Act to increase access to family planning. Her fight with the Bush Administration ensured that Plan B, an emergency contraceptive, will be available to millions of American women and will reduce the need for abortions.
Hillary is strongly committed to making sure that every American has the right to vote in fair, accessible, and credible elections. She introduced the Count Every Vote Act of 2005 to ensure better protection of votes and to ensure that every vote is counted.
In 2006, New Yorkers reelected Hillary to the Senate with 67 percent of the vote.
From The On The Issues website. I did not copy all the pertinent information but it is worth going there to get more information Ms Clinton.
Voting Record on Abortion:
Voted liberal line on partial birth & harm to fetus. (Oct 2005)
Voted YES on expanding research to more embryonic stem cell lines. (Apr 2007)
Voted NO on notifying parents of minors who get out-of-state abortions. (Jul 2006)
Voted YES on $100M to reduce teen pregnancy by education & contraceptives. (Mar 2005)
Voted NO on criminal penalty for harming unborn fetus during other crime. (Mar 2004)
Voted NO on banning partial birth abortions except for maternal life. (Mar 2003)
Recommended by EMILY's List of pro-choice women. (Apr 2001)
Rated 100% by NARAL, indicating a pro-choice voting record. (Dec 2003)
Expand embryonic stem cell research. (Jun 2004)
Voting Record on Civil Rights
Op-ed: Voted no on flag-burning to build centrist credential. (May 2006)
Voted NO on recommending Constitutional ban on flag desecration. (Jun 2006)
Voted NO on constitutional ban of same-sex marriage. (Jun 2006)
Voted YES on adding sexual orientation to definition of hate crimes. (Jun 2002)
Voted YES on loosening restrictions on cell phone wiretapping. (Oct 2001)
Rated 60% by the ACLU, indicating a mixed civil rights voting record. (Dec 2002)
Voting Record on Education
Solemn vow never to abandon our public schools. (Jul 1999)
Voted YES on $52M for "21st century community learning centers". (Oct 2005)
Voted YES on $5B for grants to local educational agencies. (Oct 2005)
Voted YES on shifting $11B from corporate tax loopholes to education. (Mar 2005)
Voted YES on funding smaller classes instead of private tutors. (May 2001)
Voted YES on funding student testing instead of private tutors. (May 2001)
Voted YES on spending $448B of tax cut on education & debt reduction. (Apr 2001)
Rated 82% by the NEA, indicating pro-public education votes. (Dec 2003)
Voting Record on Energy
Voted YES on removing oil & gas exploration subsidies. (Jun 2007)
Voted YES on making oil-producing and exporting cartels illegal. (Jun 2007)
Voted YES on factoring global warming into federal project planning. (May 2007)
Voted YES on disallowing an oil leasing program in Alaska's ANWR. (Nov 2005)
Voted YES on $3.1B for emergency oil assistance for hurricane-hit areas. (Oct 2005)
Voted YES on reducing oil usage by 40% by 2025 (instead of 5%). (Jun 2005)
Voted YES on banning drilling in the Arctic National Wildlife Refuge. (Mar 2005)
Voted NO on Bush Administration Energy Policy. (Jul 2003)
Voted YES on targeting 100,000 hydrogen-powered vehicles by 2010. (Jun 2003)
Voted YES on removing consideration of drilling ANWR from budget bill. (Mar 2003)
Voted NO on drilling ANWR on national security grounds. (Apr 2002)
Voted NO on terminating CAFE standards within 15 months. (Mar 2002)
Voting Record on Health Care
Voted YES on requiring negotiated Rx prices for Medicare part D. (Apr 2007)
Voted NO on limiting medical liability lawsuits to $250,000. (May 2006)
Voted YES on expanding enrollment period for Medicare Part D. (Feb 2006)
Voted YES on increasing Medicaid rebate for producing generics. (Nov 2005)
Voted YES on negotiating bulk purchases for Medicare prescription drug. (Mar 2005)
Voted NO on $40 billion per year for limited Medicare prescription drug benefit. (Jun 2003)
Voted YES on allowing reimportation of Rx drugs from Canada. (Jul 2002)
Voted YES on allowing patients to sue HMOs & collect punitive damages. (Jun 2001)
Voted NO on funding GOP version of Medicare prescription drug benefit. (Apr 2001)
There is a lot more information on Ms Clinton on the On The Issues website.