Every successful Senator and Representative faces the Potomac paradox: seniority breeds power and prestige, but its responsibilities can also alienate an incumbent from the voters back home.
So far this year, grass-roots revolts have shelved Senators Frank Lausche of Ohio and Thomas Kuchel of California. Now a similar syndrome threatens Oklahoma Senator Mike Monroney, 66, a 30-year Capitol Hill veteran and his state's senior member of Congress.
Six terms in the House and three in the Senate have made Monroney a fixture, but one not really plugged into the sockets of power. A...