Taking a position as inflammatory as refusing to certify a fair election would be riskier for G.O.P. lawmakers if they needed to appeal to an electorate beyond their next set of primary voters.

By Reid J. Epstein and Nick Corasaniti

Representative Jim Jordan of Ohio comes from a duck-shaped district that stretches across parts of 14 counties and five media markets and would take nearly three hours to drive end to end.

Designed after the 2010 census by Ohio Republicans intent on keeping Mr. Jordan, then a three-term congressman, safely in office, the district has produced the desired result. He has won each of his last five elections by at least 22 percentage points.

The outlines of Ohio’s Fourth Congressional District have left Mr. Jordan, like scores of other congressional and state lawmakers, accountable only to his party’s electorate in Republican primaries. That phenomenon encouraged the Republican Party’s fealty to President Trump as he pushed his baseless claims of election fraud.

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