SCENARIOS: Top goals in Democratic Congress, White House

(Reuters) - Democrats seem likely to expand their control of the U.S. Congress and win the White House on Tuesday, according to public opinion polls.

Here is a look at some of the priorities Democrats will push if Barack Obama is elected president and the party expands its majorities the House of Representatives and Senate.

* House Speaker Nancy Pelosi, a California Democrat, says the top goal will be to set timetables for the withdrawal of U.S. troops from Iraq, which would free up additional U.S. troops to help root out militants in Afghanistan and other countries.

* Democrats want to reverse what they view as years of inadequate federal regulation of the financial industry, which has helped lead to the current turmoil on Wall Street and record home foreclosures.

* Stimulate the economy. This could be done, in part, by spending hundreds of billions of dollars on hiring people to rebuild crumbling U.S. roads and bridges as well as sewer and water systems. Obama also wants to cut taxes for the middle class and plug tax loopholes he says encourage U.S. companies to move overseas, taking American jobs with them.

* Expand health care, perhaps starting with passing a bill vetoed by outgoing President George W. Bush to increase federal aid to the State Childrens' Health Insurance Program.

* Move the United States toward energy independence by encouraging oil companies to drill where they already are allowed, stepping up conservation, accelerating development of alternative energy sources and reining in oil speculators blamed, in part, for steep prices increases this year.

* Enact legislation vetoed by Bush that would expand federally funded embryonic stem cell research.

* After eight years of Bush nominating anti-abortion rights conservatives to federal courts, Obama would likely name moderate and liberal ones.

* Legislation to allow workers to organize if a majority of them sign a union card. This would let them avoid secret-ballot elections that critics say are often thwarted by employers.

(Reporting by Thomas Ferraro and Richard Cowan; editing by David Wiessler)