Table:
text: United States House of Representatives elections, 1990
California
California
District Incumbent Party Elected Status_ Opponent
California 5 Nancy Pelosi Democratic 1987 Re-elected Nancy Pelosi (D) 77.2% Alan Nichols (R) 22.8%
California 6 Barbara Boxer Democratic 1982 Re-elected Barbara Boxer (D) 68.1% Bill Boerum (R) 31.9%
California 7 George Miller Democratic 1974 Re-elected George Miller (D) 60.5% Roger A. Payton (R) 39.5%
California 8 Ron Dellums Democratic 1970 Re-elected Ron Dellums (D) 61.3% Barbara Galewski (R) 38.7%
California 9 Pete Stark Democratic 1972 Re-elected Pete Stark (D) 58.4% Victor Romero (R) 41.6%
California 10 Don Edwards Democratic 1972 Re-elected Don Edwards (D) 62.7% Mark Patrosso (R) 37.3%

Question: Who are the incumbents elected in the 1974 United States House of Representatives elections in California in the 1990s?