diff --git a/packages/types/src/interfaceRegistry.ts b/packages/types/src/interfaceRegistry.ts
index bcced822a3..35f9068c99 100644
--- a/packages/types/src/interfaceRegistry.ts
+++ b/packages/types/src/interfaceRegistry.ts
@@ -24,7 +24,7 @@ import { Kind, OffenceDetails, Offender, OpaqueTimeSlot, ReportIdOf, Reporter }
 import { ActiveRecovery, RecoveryConfig } from '@polkadot/types/interfaces/recovery';
 import { FullIdentification, IdentificationTuple, Keys, SessionIndex, SessionKeys1, SessionKeys2, SessionKeys3, SessionKeys4, SessionKeys5, SessionKeys6 } from '@polkadot/types/interfaces/session';
 import { Bid, BidKind, BidKindVouch, SocietyJudgement, SocietyVote, StrikeCount, VouchingStatus } from '@polkadot/types/interfaces/society';
-import { CompactAssignments, ElectionCompute, ElectionResult, ElectionStatus, EraIndex, EraPoints, EraRewards, Exposure, Forcing, IndividualExposure, KeyType, MomentOf, Nominations, PhragmenScore, Points, RewardDestination, SlashJournalEntry, SlashingSpans, SlashingSpansTo204, SpanIndex, SpanRecord, StakingLedger, UnappliedSlash, UnappliedSlashOther, UnlockChunk, ValidatorIndex, ValidatorPrefs, ValidatorPrefsTo145, ValidatorPrefsTo196 } from '@polkadot/types/interfaces/staking';
+import { CompactAssignments, CompactScore, ElectionCompute, ElectionResult, ElectionStatus, EraIndex, EraPoints, EraRewards, Exposure, Forcing, IndividualExposure, KeyType, MomentOf, Nominations, PhragmenScore, Points, RewardDestination, SlashJournalEntry, SlashingSpans, SlashingSpansTo204, SpanIndex, SpanRecord, StakingLedger, UnappliedSlash, UnappliedSlashOther, UnlockChunk, ValidatorIndex, ValidatorPrefs, ValidatorPrefsTo145, ValidatorPrefsTo196 } from '@polkadot/types/interfaces/staking';
 import { AccountInfo, DigestOf, DispatchError, DispatchErrorModule, DispatchErrorTo198, DispatchResult, DispatchResultOf, DispatchResultTo198, Event, EventId, EventIndex, EventRecord, EventRecordTo76, Key, Phase, RefCount } from '@polkadot/types/interfaces/system';
 import { OpenTip, OpenTipFinder, OpenTipTip, TreasuryProposal } from '@polkadot/types/interfaces/treasury';
 import { Multiplier } from '@polkadot/types/interfaces/txpayment';
@@ -727,6 +727,9 @@ export interface InterfaceRegistry {
   CompactAssignments: CompactAssignments;
   'Option<CompactAssignments>': Option<CompactAssignments>;
   'Vec<CompactAssignments>': Vec<CompactAssignments>;
+  CompactScore: CompactScore;
+  'Option<CompactScore>': Option<CompactScore>;
+  'Vec<CompactScore>': Vec<CompactScore>;
   ElectionCompute: ElectionCompute;
   'Option<ElectionCompute>': Option<ElectionCompute>;
   'Vec<ElectionCompute>': Vec<ElectionCompute>;
diff --git a/packages/types/src/interfaces/staking/CompactAssignments.spec.ts b/packages/types/src/interfaces/staking/CompactAssignments.spec.ts
new file mode 100644
index 0000000000..c49d3ce2d3
--- /dev/null
+++ b/packages/types/src/interfaces/staking/CompactAssignments.spec.ts
@@ -0,0 +1,32 @@
+// Copyright 2017-2020 @polkadot/types authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { TypeRegistry, createType, createTypeUnsafe } from '../../create';
+
+describe('CompactAssignments', (): void => {
+  const registry = new TypeRegistry();
+  const votes2 = [['5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY', [['5FLSigC9HGRKVhB9FiEo4Y3koPsNmBmLJbpXg2mp1hXcS59Y', 123456]], '5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty']];
+  const test = createType(registry, 'CompactAssignments', {
+    votes1: [['5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY', [], '5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty']],
+    votes2
+  });
+
+  it('has a valid vote1 ([Type; <number>] equivalency)', (): void => {
+    expect(test.votes1.toHex()).toEqual(
+      createTypeUnsafe(registry, 'Vec<(AccountId, AccountId)>', [[
+        ['5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY', '5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty']
+      ]]).toHex()
+    );
+  });
+
+  it('hash valid vot2 (actual tuple values)', (): void => {
+    expect(test.votes2.toHex()).toEqual(
+      createTypeUnsafe(registry, 'Vec<(AccountId, [(AccountId, u128); 1], AccountId)>', [votes2]).toHex()
+    );
+  });
+
+  it('has a proper decoded toHuman() available', (): void => {
+    expect(test.votes2.toHuman()).toEqual([['5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY', [['5FLSigC9HGRKVhB9FiEo4Y3koPsNmBmLJbpXg2mp1hXcS59Y', '123,456']], '5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty']]);
+  });
+});
diff --git a/packages/types/src/interfaces/staking/definitions.ts b/packages/types/src/interfaces/staking/definitions.ts
index c7ba20661e..f2560d1d53 100644
--- a/packages/types/src/interfaces/staking/definitions.ts
+++ b/packages/types/src/interfaces/staking/definitions.ts
@@ -5,23 +5,24 @@
 export default {
   types: {
     CompactAssignments: {
-      votes1: 'Vec<(AccountId, AccountId)>',
-      votes2: 'Vec<(AccountId, (AccountId, u128), AccountId)>',
-      votes3: 'Vec<(AccountId, [(AccountId, u128); 2], AccountId)>',
-      votes4: 'Vec<(AccountId, [(AccountId, u128); 3], AccountId)>',
-      votes5: 'Vec<(AccountId, [(AccountId, u128); 4], AccountId)>',
-      votes6: 'Vec<(AccountId, [(AccountId, u128); 5], AccountId)>',
-      votes7: 'Vec<(AccountId, [(AccountId, u128); 6], AccountId)>',
-      votes8: 'Vec<(AccountId, [(AccountId, u128); 7], AccountId)>',
-      votes9: 'Vec<(AccountId, [(AccountId, u128); 8], AccountId)>',
-      votes10: 'Vec<(AccountId, [(AccountId, u128); 9], AccountId)>',
-      votes11: 'Vec<(AccountId, [(AccountId, u128); 10], AccountId)>',
-      votes12: 'Vec<(AccountId, [(AccountId, u128); 11], AccountId)>',
-      votes13: 'Vec<(AccountId, [(AccountId, u128); 12], AccountId)>',
-      votes14: 'Vec<(AccountId, [(AccountId, u128); 13], AccountId)>',
-      votes15: 'Vec<(AccountId, [(AccountId, u128); 14], AccountId)>',
-      votes16: 'Vec<(AccountId, [(AccountId, u128); 15], AccountId)>',
+      votes1: 'Vec<(AccountId, [CompactScore; 0], AccountId)>',
+      votes2: 'Vec<(AccountId, [CompactScore; 1], AccountId)>',
+      votes3: 'Vec<(AccountId, [CompactScore; 2], AccountId)>',
+      votes4: 'Vec<(AccountId, [CompactScore; 3], AccountId)>',
+      votes5: 'Vec<(AccountId, [CompactScore; 4], AccountId)>',
+      votes6: 'Vec<(AccountId, [CompactScore; 5], AccountId)>',
+      votes7: 'Vec<(AccountId, [CompactScore; 6], AccountId)>',
+      votes8: 'Vec<(AccountId, [CompactScore; 7], AccountId)>',
+      votes9: 'Vec<(AccountId, [CompactScore; 8], AccountId)>',
+      votes10: 'Vec<(AccountId, [CompactScore; 9], AccountId)>',
+      votes11: 'Vec<(AccountId, [CompactScore; 10], AccountId)>',
+      votes12: 'Vec<(AccountId, [CompactScore; 11], AccountId)>',
+      votes13: 'Vec<(AccountId, [CompactScore; 12], AccountId)>',
+      votes14: 'Vec<(AccountId, [CompactScore; 13], AccountId)>',
+      votes15: 'Vec<(AccountId, [CompactScore; 14], AccountId)>',
+      votes16: 'Vec<(AccountId, [CompactScore; 15], AccountId)>'
     },
+    CompactScore: '(AccountId, u128)',
     ElectionCompute: {
       _enum: ['OnChain', 'Signed', 'Authority']
     },
diff --git a/packages/types/src/interfaces/staking/types.ts b/packages/types/src/interfaces/staking/types.ts
index cbe3b77ad9..7977b9878d 100644
--- a/packages/types/src/interfaces/staking/types.ts
+++ b/packages/types/src/interfaces/staking/types.ts
@@ -8,24 +8,27 @@ import { AccountId, Balance, BlockNumber, Moment, Perbill } from '@polkadot/type
 
 /** @name CompactAssignments */
 export interface CompactAssignments extends Struct {
-  readonly votes1: Vec<ITuple<[AccountId, AccountId]>>;
-  readonly votes2: Vec<ITuple<[AccountId, ITuple<[AccountId, u128]>, AccountId]>>;
-  readonly votes3: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes4: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes5: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes6: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes7: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes8: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes9: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes10: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes11: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes12: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes13: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes14: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes15: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
-  readonly votes16: Vec<ITuple<[AccountId, Vec<ITuple<[AccountId, u128]>>, AccountId]>>;
+  readonly votes1: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes2: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes3: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes4: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes5: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes6: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes7: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes8: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes9: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes10: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes11: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes12: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes13: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes14: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes15: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
+  readonly votes16: Vec<ITuple<[AccountId, Vec<CompactScore>, AccountId]>>;
 }
 
+/** @name CompactScore */
+export interface CompactScore extends ITuple<[AccountId, u128]> {}
+
 /** @name ElectionCompute */
 export interface ElectionCompute extends Enum {
   readonly isOnChain: boolean;