JEFFERSON CITY, Mo. — Debate over Missouri’s next congressional map stretched into its third day on Wednesday, and hard-line GOP Sen. Bob Onder wondered whether GOP leaders were planning to cut off debate and force a vote. “I’m not sure anything’s off the table,” Senate Majority Leader Caleb Rowden, R-Columbia, told the Lake Saint Louis Republican. The exchange, soon after the Senate convened at noon on Wednesday, showed disagreement between Republicans persisted overnight and suggested a breakthrough on new congressional boundaries was not imminent. With hard-liners refusing to back a “6-2” c…