Understanding Voting Records

When the House or Senate takes an official recorded vote, it's called a "roll call" — each member's position is logged by name and published. These records are permanent and public, and they are the most concrete evidence of what a representative actually did, as opposed to what they said. A campaign promise is a statement; a roll call is an action with a date attached.

Types of votes. A "Yea" or "Yes" vote supports the measure; "Nay" or "No" opposes it. "Present" means the member was in the chamber but declined to take a side — uncommon, and usually invoked for a conflict of interest or as a deliberate protest. "Not Voting" means the member wasn't recorded at all: absent, traveling, ill, or, occasionally, ducking a politically awkward vote. Because every one of these is captured, you can measure not just how a member votes but how reliably they show up. A pattern of "Not Voting" on the hardest, most divisive questions can itself be revealing.

Not every decision gets a roll call. Both chambers dispose of a great deal of business by voice vote ("the ayes have it") or unanimous consent, where no individual positions are recorded. Recorded votes happen when the measure is significant, when a member formally requests one, or when the rules require it. So the absence of a roll call on a topic doesn't mean nothing happened — it often means the outcome wasn't in doubt.

Not every roll call is a vote on a bill, either, and this trips up a lot of readers. Many recorded votes are procedural: a cloture vote to end a Senate filibuster, a "motion to table" that kills an amendment without debating its merits, a "motion to recommit" that sends a bill back to committee, or a vote on the rule governing floor debate. A member can vote for the procedural motion that advances a bill and then vote against the bill itself, or vice versa — so reading a single "Yes" or "No" without knowing what the question actually was can mislead. When you look at a vote on this site, check the description of what was being decided, not just the tally, because the procedural votes are often where a bill's real fate is sealed.

Reading the partisan pattern. A party-line vote is one where nearly all Republicans land on one side and nearly all Democrats on the other; these dominate on high-profile, ideologically charged bills and are a good index of how polarized an issue is. Bipartisan votes — where meaningful numbers from both parties agree — are rarer and usually signal either broad consensus or a carefully negotiated compromise. When you study a single member, the most informative votes are the ones where they break from their own party. Those defections show where a representative's district, conscience, or donors pull harder than party loyalty.

What to watch for. Compare your representative's votes against their party's majority position. Do they march in lockstep with leadership, or do they occasionally break ranks — and on which issues? Then compare their record against what they campaigned on. A member who ran as an independent-minded moderate but votes with their party 99% of the time is telling you something. On this site, a member's profile surfaces their recent votes, their attendance, and a "votes with party" percentage precisely so you can make these comparisons without wading through raw congressional records.

The DW-NOMINATE score. The ideology score on member profiles is not our opinion — it's DW-NOMINATE, a measure developed by political scientists that places each member on a scale from roughly -1 (most liberal) to +1 (most conservative) based on the entire pattern of their recorded votes relative to everyone else's. A score near 0 indicates a member who crosses party lines often. Its value is that it's derived purely from behavior: it captures where a member actually votes, which can diverge sharply from the brand they present in speeches and ads. Tracking how a member's score shifts over a career can show a genuine ideological move, or a member repositioning as their district changes.

Putting it together. When a profile shows "97.3% with party," it means the member voted with their party's majority on 97.3% of recorded votes — leaving little room for independent judgment. Read alongside their attendance rate, their campaign-finance page, and the specific bills where they did break ranks, a voting record becomes the backbone of real accountability: a factual, dated account of how one person used the power voters lent them.