Democrats now face the task of overcoming their own differences on the measure, and deciding whether they will use it as a vehicle to try to curb the filibuster.WASHINGTON — A key Senate committee deadlocked on Tuesday over Democrats’ sweeping proposed elections overhaul, previewing a partisan showdown on the Senate floor in the coming months that could determine the future of voting rights and campaign rules across the country.The tie vote in the Senate Rules Committee — with nine Democrats in favor and nine Republicans opposed — does not prevent Democrats from moving forward with the 800-page legislation, known as the For the People Act. Proponents hailed the vote as an important step toward adopting far-reaching federal changes to blunt the restrictive new voting laws emerging in Republican-led battleground states like Georgia and Florida.But the action confronted Democrats with a set of thorny questions about how to push forward on a bill that they view as a civil rights imperative with sweeping implications for democracy and their party. The bill as written faces near-impossible odds in the evenly divided Senate, where Republicans are expected to block it using a filibuster and at least one Democrat, Senator Joe Manchin III of West Virginia, remains opposed.With their control in Washington potentially fleeting and Republican states racing ahead with laws to curtail ballot access, Democrats must reach consensus among themselves on the measure, and decide whether to attempt to destroy or significantly alter the Senate’s filibuster rules — which set a 60-vote threshold to overcome any objection to advancing legislation — to salvage its chances of becoming law.“Here in the 21st century, we are witnessing an attempt at the greatest contraction of voting rights since the end of Reconstruction and the beginning of Jim Crow,” Senator Chuck Schumer, Democrat of New York and the majority leader, said at the session’s outset.He cited a new law in Iowa restricting early and mail-in voting, another in Florida cutting back on the use of drop boxes and making it harder to vote by mail, and one in Georgia, where Democrats have attacked the decision to bar third parties from giving water or snacks to voters waiting in long lines.“These laws carry the stench of oppression, the smell of bigotry,” Mr. Schumer said, telling Republicans they faced a “legacy-defining choice.” “Are you going to stamp it out, or are you going to spread it?”Among other changes, Democrats’ bill would essentially overwrite such changes by setting a nationwide floor on ballot access. Each state would be required to implement 15 days of early voting, no-excuse vote by mail programs like the ones many states expanded during the pandemic and automatic and same-day voter registration. Voting rights would be restored to those who had served prison sentences for felonies, and states would have to accept a workaround neutering voter identification laws that Democrats say can make it harder for minorities to vote.Over eight hours of debate, the clash only served to highlight how vast philosophical differences over elections have come to divide the two parties in the shadow of former President Donald J. Trump’s lies about fraud and theft in the 2020 contest.Republicans gave no indication they were willing to cede any ground to Democrats in a fight that stretches from the Capitol in Washington to state houses across the country. Instead, with Mr. Schumer’s Republican counterpart, Senator Mitch McConnell of Kentucky, taking the lead, they argued that Democrats were merely using state laws as a fig leaf to justify an unnecessary and self-serving federal power grab “cooked up at the Democratic National Committee.”“Our democracy is not in crisis, and we’re not going to let one party take over our democracy under the false pretense of saving it,” Mr. McConnell said.He and other Republicans on the committee were careful to sidestep many of Mr. Trump’s outlandish claims of fraud, which have taken deep root in the party, fueling the Jan. 6 assault on the Capitol and prompting state lawmakers to adjust their election laws. But in a late-afternoon statement, Mr. Trump, who still towers over the party, made clear the connection between those lies and the push to curb ballot access, calling for every state to adopt restrictive voting laws, including voter-identification requirements, “so we never again have an election rigged and stolen from us.”“The people are demanding real reform!” Mr. Trump wrote.While the Rules Committee vote fulfilled Democrats’ pledge to thoroughly consider the bill before it reached the floor, it left an enormous challenge for Mr. Schumer. Progressive activists are spending millions of dollars to ramp up pressure on Democrats to quickly scrap the filibuster or miss a chance to implement the changes before 2022. The bill already passed the House with only Democratic votes.“What is intense pressure now is only going to grow,” said Eli Zupnick, a former Senate leadership aide and a spokesman for Fix Our Senate, a coalition of liberal groups pushing to eliminate the filibuster. “There is no way out. There is no third option. It is either the filibuster or the For the People Act.”But Mr. Manchin and a small group of others remain uncomfortable both with changing Senate rules and with provisions of the underlying bill, which also includes a public financing system for congressional candidates, far-reaching new ethics requirements for Congress and the White House, an end to gerrymandering congressional districts and dozens of other significant changes.Demonstrators protesting Georgia’s voting legislation in Atlanta in March.Nicole Craine for The New York TimesDemocratic senators plan to meet privately Thursday afternoon to begin deliberations over how to move forward, according to two Democratic officials who discussed the scheduled private session on the condition of anonymity.At least some senators appear ready to make wholesale changes if necessary to win the support of Mr. Manchin and other hesitant Democrats. One of them, Senator Tim Kaine of Virginia, said the stakes were “existential” if Democrats failed.“If we can’t unify behind it, I think there are going to be some tough decisions to maybe set pieces of it aside,” Mr. Kaine said in an interview.Democrats proposed only modest changes during Thursday’s marathon session in the Rules Committee.Republicans rejected a large package of changes meant to address concerns raised primarily by state elections administrators who have complained that some voting provisions would be expensive or onerous to implement.Republicans also rejected a proposal by Senator Jon Ossoff, Democrat of Georgia, to strike down bans, like one included in Georgia’s new law, on providing water to voters stuck in long lines to cast ballots..css-1xzcza9{list-style-type:disc;padding-inline-start:1em;}.css-3btd0c{font-family:nyt-franklin,helvetica,arial,sans-serif;font-size:1rem;line-height:1.375rem;color:#333;margin-bottom:0.78125rem;}@media 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(min-width:740px){.css-12vbvwq{padding:20px;width:100%;}}.css-12vbvwq:focus{outline:1px solid #e2e2e2;}#NYT_BELOW_MAIN_CONTENT_REGION .css-12vbvwq{border:none;padding:10px 0 0;border-top:2px solid #121212;}.css-12vbvwq[data-truncated] .css-rdoyk0{-webkit-transform:rotate(0deg);-ms-transform:rotate(0deg);transform:rotate(0deg);}.css-12vbvwq[data-truncated] .css-eb027h{max-height:300px;overflow:hidden;-webkit-transition:none;transition:none;}.css-12vbvwq[data-truncated] .css-5gimkt:after{content:’See more’;}.css-12vbvwq[data-truncated] .css-6mllg9{opacity:1;}.css-1rh1sk1{margin:0 auto;overflow:hidden;}.css-1rh1sk1 strong{font-weight:700;}.css-1rh1sk1 em{font-style:italic;}.css-1rh1sk1 a{color:#326891;-webkit-text-decoration:underline;text-decoration:underline;text-underline-offset:1px;-webkit-text-decoration-thickness:1px;text-decoration-thickness:1px;-webkit-text-decoration-color:#ccd9e3;text-decoration-color:#ccd9e3;}.css-1rh1sk1 a:visited{color:#333;-webkit-text-decoration-color:#ccc;text-decoration-color:#ccc;}.css-1rh1sk1 a:hover{-webkit-text-decoration:none;text-decoration:none;}When the time came to offer their own amendments, Republicans were far more ambitious, submitting 150 proposals to kill various pieces of the bill. Ultimately, they demanded votes on only a couple of dozen, many of which forced Democrats to defend positions Republicans believe are politically unpopular.Senator Roy Blunt of Missouri, the top Republican on the committee, tried to strip the provision creating a public financing system that would match small donations to congressional candidates with federal funds. Senator Ted Cruz, Republican of Texas, argued the case against it most vividly, calculating how much each member of the committee might receive in matching funds, including $24 million for himself.Senator Roy Blunt of Missouri, the top Republican on the Senate panel considering the measure, tried to strip the bill of a public financing system that would match small donations to congressional candidates with federal funds.Stefani Reynolds for The New York Times“Your constituents in every one of your states, I would venture, do not want to give your campaigns or my campaign millions of dollars in federal funds,” he said. “We do not need welfare for politicians.”Democrats pointed out that the public financing would be optional, but defended it as far preferable to the current system, in which politicians largely rely on a small number of wealthy donors and special interests to bankroll their campaigns. The amendment failed.“If people want to pay for their campaigns with big-money donors instead, I guess that’s what they’ll do,” said Senator Amy Klobuchar of Minnesota, the committee chairwoman.In a sign of the how seriously both parties took the debate, Mr. McConnell, who rarely attends hearings as party leader, remained glued to the dais for much of the day, sparring vigorously with Democrats. He was most animated in opposition to proposed changes to campaign finance laws, reprising his role as the Senate’s pre-eminent champion of undisclosed, unlimited political spending.“Regardless of who has a partisan advantage here — let’s just put that aside — is it the business of the government to supervise political speech, to decide what you can say about an issue that may be in proximity to an election?” he said.Mr. McConnell called unsuccessfully for dropping language that would require super PACs to disclose the identities of their big donors and a proposed restructuring of the Federal Election Commission to make it more partisan.Mr. Ossoff pushed back. Arguing that there was often no difference between the objectives of super PACs and traditional campaigns, he said, “The public should have the right to know who is putting significant resources into influencing the views of the voters.” More