The thinking, according to Republicans, is that Judge Kavanaugh’s confirmation would cause a backlash from female and independent voters against Republican candidates in dozens of highly competitive House races — many of which have already been slipping away — and do more damage than in statewide Senate contests. The party has a 23-seat majority in the House…

If Republicans are able to narrowly seat Judge Kavanaugh, who has angrily portrayed himself as the victim of a Democratic smear campaign, they would quite likely thrill their party’s activist base and give voters on the right a sense of momentum weeks before the midterm elections. By muscling forward with a floor vote next week, Republicans would also imperil several Senate Democrats from strongly conservative states who have opposed Judge Kavanaugh or expressed ambivalence about his nomination.

Yet in doing so, Republicans would energize many Democrats and a share of independents in suburban congressional districts and big-state governor’s races where female voters were already enraged by Mr. Trump and polls have shown a gender gap stretching to canyon-sized proportions. Republicans’ ability to keep their thin House majority depends on political moderates who were already skeptical of Judge Kavanaugh before this past week.