51.   On the surface, Indiana, one of the most Republican states in the country, is a testing ground for the strength of New Democrats.

52.   Religious conservatives are expected to be particularly active in the caucuses, which have become a testing ground more of social issues than economic ones.

53.   Shikoku is one of the poorest and most backward parts of Japan, but Hashimoto has shaken up the prefecture and made it a testing ground for the nation.

54.   Second, voters here, among the first to revolt against high taxes and big government, offer a testing ground for national political messages.

55.   Since winning control of Congress three years ago, Republicans have used the District of Columbia as a testing ground for many of their urban policy ideas.

56.   The amateur competition will also serve as a testing ground for several new ideas for the main competition.

57.   The Bay Area is expected to be a testing ground for many of the new high-tech educational programs because of its links with Silicon Valley.

58.   The CD-ROM magazines, like Launch, serve as testing grounds for the interactive ads being prepared at major agencies.

59.   The defense budget could become a testing ground for that new power.

60.   The earliest testing grounds for new moves became the sloping asphalt wastelands around certain grade schools.