• Republicans are wrestling with the difficult task of how to repeal and replace ­ObamaCare.

The party remains divided on many central questions: How long should repeal take? Should the Medicaid expansion be abolished? And should some of the taxes in ­ObamaCare be kept to help pay for a new coverage option?

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As President Trump, Speaker Paul Ryan Paul Davis RyanAt indoor rally, Pence says election runs through Wisconsin Juan Williams: Breaking down the debates Peterson faces fight of his career in deep-red Minnesota district MORE (R-Wis.) and Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll The Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally MORE (R-Ky.) seek to build consensus on the path forward, here are 10 of the biggest players to watch.

Sen. Lamar Alexander Andrew (Lamar) Lamar AlexanderTrump health officials grilled over reports of politics in COVID-19 response Now is the time to renew our focus on students and their futures CDC says asymptomatic people don't need testing, draws criticism from experts MORE (R-Tenn.)

Alexander is helping to lead the Senate’s ­ObamaCare efforts as chairman of the Senate Health Committee. Adopting a pragmatic tone, Alexander has touted the “repair” of ­ObamaCare rather than repeal and called for targeted actions to make the individual market more stable.

“We can repair the individual market, which is a good place to start,” Alexander said at a hearing he held earlier this month.

Alexander has expressed hope about working with Democrats on the issue, but the polarized politics of ­ObamaCare could make that all but impossible. Still, Alexander recently cited a letter from Sen. Tim Kaine Timothy (Tim) Michael KaineThe Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep Catholic group launches .7M campaign against Biden targeting swing-state voters GOP senator to quarantine after coronavirus exposure MORE (D-Va.) offering to work on improvements to the law.

Rep. Mark Meadows (R-N.C.)

Meadows is among those calling for a speedy repeal of ­ObamaCare; as chairman of the conservative House Freedom Caucus, his voice carries weight.

Conservatives are growing impatient with the pace of repeal and replace efforts. Meadows, along with his predecessor as Freedom Caucus chairman, Rep. Jim Jordan (R-Ohio), recently released a statement calling on Republican leaders to bring a repeal bill to a vote quickly.

They also warned the repeal legislation should not be watered down from what passed the House in 2015.

“There’s no reason we should put anything less on President Trump’s desk than we put on President Obama’s now that we know it will be signed into law,” Meadows and Jordan said.

Secretary of Health and Human Services Tom Price

Price is taking the helm of the administration’s healthcare efforts after a drawn-out confirmation battle.

One of the first actions his department appears ready to take is finishing a regulation on ­ObamaCare “market stabilization.” That regulation is likely to include several tweaks that would help insurance companies, including a crackdown on people gaming the system through extra signup periods.

The rule could help prevent insurers from bailing out of the ­ObamaCare market, buying time for the replacement effort.

Beyond that, Price could take actions to change central aspects of the law, like weakening enforcement of the mandate for people to get coverage. Trump has also indicated he could help shape a replacement plan, saying last month that his administration would release a plan after Price’s confirmation.

Sen. Dean Heller Dean Arthur HellerOn The Trail: Democrats plan to hammer Trump on Social Security, Medicare Lobbying World Democrats spend big to put Senate in play MORE (R-Nev.)

Two big reasons to watch Heller: He is one of the few Democratic targets in the 2018 elections, and he comes from a state that accepted ObamaCare’s expansion of Medicaid, the insurance program for the poor.

Republican senators from states that accepted the Medicaid expansion are grappling with whether to try to salvage it under repeal. They met last week to start discussing their options.

During Price’s confirmation hearing, Heller expressed his worries about people losing coverage if the Medicaid expansion is repealed. Under the expansion, coverage is available to adults who earn up to 138 percent of the federal poverty level.

Sen. Susan Collins Susan Margaret CollinsThe Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally Gideon leads Collins by 12 points in Maine Senate race: poll Senate leaders quash talk of rank-and-file COVID-19 deal MORE (R-Maine)

The centrist senator is a player to watch on any number of issues, but perhaps none more so than ­ObamaCare.

She has opposed voting to repeal the healthcare law before a replacement plan is ready. Collins has also expressed reservations about defunding Planned Parenthood as part of the repeal bill, something Ryan has called for.

The senator has introduced a replacement plan with Sen. Bill Cassidy (R-La.) that would allow states to keep ­ObamaCare if they decided against moving to a new system. That plan has drawn fire from conservatives, who say ­ObamaCare must be wiped from the books.

Rep. Greg Walden (R-Ore.)

Walden’s panel, the House Energy and Commerce Committee, is at the forefront of the repeal effort. To meet the GOP’s aggressive timeline, the panel is looking to consider an ­ObamaCare bill on March 1.

Like Alexander, Walden has treaded carefully when asked how far the GOP will go in repealing ­ObamaCare. “There are some of these provisions in the law that probably will stay,” he said.

He has introduced a bill aimed at maintaining protections for people with pre-existing conditions, though the details have yet to be worked out.

Sen. Rand Paul Randal (Rand) Howard PaulGOP senator to quarantine after coronavirus exposure The Hill's Morning Report - Sponsored by National Industries for the Blind - Trump seeks to flip 'Rage' narrative; Dems block COVID-19 bill Overnight Health Care: Senate Democrats block GOP relief bill | Democrats reveal Medicaid chief's spending on high-paid consultants | Trump calls question about why he 'lied' about COVID-19 a 'disgrace' MORE (R-Ky.)

Conservative lawmakers and outside conservative groups have been rallying around Paul’s replacement plan, which he introduced last month.

The plan centers on a tax credit and expansion of health savings accounts to help people afford health insurance, while repealing the core aspects of ­ObamaCare.

Paul has also been pushing to repeal and replace ­ObamaCare at the same time. Last month, he tweeted that Trump called him to express support for the concept.

Sen. Bob Corker Robert (Bob) Phillips CorkerHas Congress captured Russia policy? Tennessee primary battle turns nasty for Republicans Cheney clashes with Trump MORE (R-Tenn.)

The Foreign Relations Committee chairman has emerged as something of a skeptic of Republicans’ course on repeal and replace.

He drew a headline in the liberal Huffington Post last week when he said of GOP ­ObamaCare replacement efforts: “To be honest, there’s not any real discussion taking place right now.”

Corker is also one of a handful of Republicans questioning whether it would be wise to repeal all of ­ObamaCare’s taxes right away, given that it would deprive them of revenue to spend on a replacement.

Sen. Bill Cassidy (R-La.)

The first-term senator and physician is amassing influence on healthcare issues.

Cassidy put forward the relatively centrist ­ObamaCare replacement plan along with Collins and is among those calling for ­ObamaCare’s taxes to remain in place in order to provide revenue for a replacement plan. “The revenue is essential,” Cassidy said when rolling out his plan.

Sen. Orrin Hatch Orrin Grant HatchBottom line Bottom line Senate GOP divided over whether they'd fill Supreme Court vacancy MORE (R-Utah)

As chairman of the Senate Finance Committee, which has jurisdiction over taxes, Hatch has enormous power to shape ­ObamaCare’s repeal.

The veteran senator, who is up for reelection in 2018, has rebuffed the Republicans who are calling for some ­ObamaCare taxes to be kept.

“All of the ­ObamaCare taxes need to go as part of the repeal process,” Hatch said this month. House Ways and Means Committee Chairman Kevin Brady Kevin Patrick BradyBusinesses, states pass on Trump payroll tax deferral Trump order on drug prices faces long road to finish line On The Money: US deficit hits trillion amid pandemic | McConnell: Chance for relief deal 'doesn't look that good' | House employees won't have payroll taxes deferred MORE (R-Texas) has expressed a similar view.