There is no litmus test" of a congressman's voting record to assess whether he deserves the support of Christians, the junior senator from Colorado told a gathering of evangelicals here.

"There are no Christian issues" before Congress, said Sen. William L. Armstrong (R-Colo.), "although there are some issues in which it's hard to see how a Christian could vote any other way."

Armstrong, elected last fall and widely identified as an evangelical, addressed the National Association of Evangelicals breakfast held as a part of the National Religious Broadcasters Association's annual convention at the Washington Hilton here.

"We must resist the temptation of thinking that to have a Christian country, you have to have a Christian majority in Congress," said Armstrong. "If you are waiting for Congress to solve these problems" of morality in the nation, he continued, "don't wait."

Robert P. Dugan Jr., director of the National Association of Evangelicals Washington office, outlined a number of issues before the legislative and administrative branches of government in which he said evangelicals are concerned.

These included tuition tax credits for parents of children in private schools, possible income-tax legislation to encourage charitable contributions, the plight of Christians in Taiwan, and the possibility of a lobbying disclosure bill that many religious groups complain would work undue hardship on them.

On tuition tax credits, Dugan said he "could debate both sides of the issue," but expressed particular concern for the "rights of Christian parents to have their children educated in Christian schools" without undue financial burdens.

Evangelicals have traditionally opposed any form of tax aid for nonpublic education, but in recent years, with the growing numbers of Christian academies, have begun to rethink that position.

Dugan said his office is also "paying close attention" to how programs related to the International Year of the Child are carried out.

The scrutiny is prmpted by what he termed "alarmist" predictions that there are measures planned that would force parents "to pay your child minimum wage to clean up his room or take out the garbage," to permit children to choose the family in which they want to grow up or to choose their religious faith.

Dugan tended to discount the claims, but added that "we are paying close attention to the leaders" of the International Year of th Child efforts, adding that "some of them folow the humanist secularist philosophy and they would probably like to break down the traditional family.

"We will be watching... and if there is any basis for the wild claims we will let you know," he pledged.